diff --git a/mateclaw-server/src/main/java/vip/mate/agent/graph/executor/ToolExecutionExecutor.java b/mateclaw-server/src/main/java/vip/mate/agent/graph/executor/ToolExecutionExecutor.java
index 6334b077..28730ddf 100644
--- a/mateclaw-server/src/main/java/vip/mate/agent/graph/executor/ToolExecutionExecutor.java
+++ b/mateclaw-server/src/main/java/vip/mate/agent/graph/executor/ToolExecutionExecutor.java
@@ -172,7 +172,7 @@ public class ToolExecutionExecutor {
 
             // 4. 分类: concurrencySafe
             boolean safe = isConcurrencySafe(toolName);
-            preparedCalls.add(new PreparedToolCall(toolCall, callback, arguments, safe, allResponses.size()));
+            preparedCalls.add(new PreparedToolCall(toolCall, callback, arguments, safe, allResponses.size(), conversationId));
             // 占位，Phase 2 填充
             allResponses.add(null);
         }
@@ -235,6 +235,14 @@ public class ToolExecutionExecutor {
     private void executePreparedCalls(List<PreparedToolCall> preparedCalls,
                                        List<ToolResponseMessage.ToolResponse> allResponses,
                                        List<GraphEventPublisher.GraphEvent> events) {
+        if (!preparedCalls.isEmpty() && streamTracker != null) {
+            String conversationId = preparedCalls.get(0).conversationId;
+            String phase = classifyBatchPhase(preparedCalls);
+            streamTracker.updatePhase(conversationId, phase);
+            streamTracker.broadcastObject(conversationId, "phase", GraphEventPublisher.phase(phase, Map.of(
+                    "toolCount", preparedCalls.size()
+            )).data());
+        }
         // 分组: 连续的 safe 工具可以并行，遇到 unsafe 工具则先等待所有 safe 完成再独占执行
         List<List<PreparedToolCall>> batches = buildExecutionBatches(preparedCalls);
 
@@ -320,6 +328,11 @@ public class ToolExecutionExecutor {
                                                                 List<GraphEventPublisher.GraphEvent> events) {
         String toolName = pc.toolCall.name();
         try {
+            if (streamTracker != null) {
+                streamTracker.updateRunningTool(pc.conversationId, toolName);
+                streamTracker.broadcastObject(pc.conversationId, GraphEventPublisher.EVENT_TOOL_START,
+                        GraphEventPublisher.toolStart(toolName, pc.arguments).data());
+            }
             log.info("[ToolExecutor] Executing tool: {} with args: {}",
                     toolName, pc.arguments != null && pc.arguments.length() > 200
                             ? pc.arguments.substring(0, 200) + "..." : pc.arguments);
@@ -338,12 +351,22 @@ public class ToolExecutionExecutor {
                 log.info("[ToolExecutor] Tool {} returned {} chars", toolName, rawLen);
             }
             events.add(GraphEventPublisher.toolComplete(toolName, result, true));
+            if (streamTracker != null) {
+                streamTracker.broadcastObject(pc.conversationId, GraphEventPublisher.EVENT_TOOL_COMPLETE,
+                        GraphEventPublisher.toolComplete(toolName, result, true).data());
+                streamTracker.updateRunningTool(pc.conversationId, null);
+            }
             return new ToolResponseMessage.ToolResponse(
                     pc.toolCall.id(), toolName, result != null ? result : "");
         } catch (Exception e) {
             log.error("[ToolExecutor] Tool {} execution failed: {}", toolName, e.getMessage(), e);
             String normalizedError = normalizeToolExecutionError(e);
             events.add(GraphEventPublisher.toolComplete(toolName, normalizedError, false));
+            if (streamTracker != null) {
+                streamTracker.broadcastObject(pc.conversationId, GraphEventPublisher.EVENT_TOOL_COMPLETE,
+                        GraphEventPublisher.toolComplete(toolName, normalizedError, false).data());
+                streamTracker.updateRunningTool(pc.conversationId, null);
+            }
             return new ToolResponseMessage.ToolResponse(
                     pc.toolCall.id(), toolName, normalizedError);
         }
@@ -408,6 +431,13 @@ public class ToolExecutionExecutor {
         return !DEFAULT_UNSAFE_TOOLS.contains(toolName);
     }
 
+    private String classifyBatchPhase(List<PreparedToolCall> preparedCalls) {
+        boolean memoryOnly = preparedCalls.stream().allMatch(pc ->
+                "read_workspace_memory_file".equals(pc.toolCall.name())
+                        || "list_workspace_memory_files".equals(pc.toolCall.name()));
+        return memoryOnly ? "reading_memory" : "executing_tool";
+    }
+
     private String normalizeToolExecutionError(Exception e) {
         String message = e != null && e.getMessage() != null ? e.getMessage() : "未知错误";
         String lower = message.toLowerCase(Locale.ROOT);
@@ -444,7 +474,8 @@ public class ToolExecutionExecutor {
             ToolCallback callback,
             String arguments,
             boolean concurrencySafe,
-            int resultIndex
+            int resultIndex,
+            String conversationId
     ) {}
 
     private record ApprovalBarrier(String pendingId, String toolName) {}
diff --git a/mateclaw-server/src/main/java/vip/mate/agent/graph/node/ReasoningNode.java b/mateclaw-server/src/main/java/vip/mate/agent/graph/node/ReasoningNode.java
index d948ea21..f63ab15e 100644
--- a/mateclaw-server/src/main/java/vip/mate/agent/graph/node/ReasoningNode.java
+++ b/mateclaw-server/src/main/java/vip/mate/agent/graph/node/ReasoningNode.java
@@ -206,6 +206,10 @@ public class ReasoningNode implements NodeAction {
 
         GraphEventPublisher.GraphEvent phaseEvent = GraphEventPublisher.phase("reasoning",
                 Map.of("iteration", accessor.iterationCount()));
+        pushPhase(conversationId, "reasoning", Map.of(
+                "iteration", accessor.iterationCount(),
+                "llmCallCount", nextLlmCallCount
+        ));
 
         NodeStreamingChatHelper.StreamResult result;
         try {
@@ -225,6 +229,11 @@ public class ReasoningNode implements NodeAction {
                             messages.size(), compactedMessages.size());
                     // compact retry 是第 2 次 LLM 调用，先递增再调用
                     nextLlmCallCount++;
+                    pushPhase(conversationId, "reasoning", Map.of(
+                            "iteration", accessor.iterationCount(),
+                            "llmCallCount", nextLlmCallCount,
+                            "compacted", true
+                    ));
                     result = streamingHelper.streamCall(chatModel, retryPrompt, conversationId, "reasoning_compact_retry");
                 } else {
                     log.warn("[ReasoningNode] Compaction did not reduce messages, cannot retry");
@@ -296,6 +305,10 @@ public class ReasoningNode implements NodeAction {
             log.info("[ReasoningNode] LLM requested {} tool call(s): {}",
                     result.toolCalls().size(),
                     result.toolCalls().stream().map(AssistantMessage.ToolCall::name).toList());
+            pushPhase(conversationId, "executing_tool", Map.of(
+                    "iteration", accessor.iterationCount(),
+                    "toolCount", result.toolCalls().size()
+            ));
 
             return MateClawStateAccessor.output()
                     .needsToolCall(true)
@@ -315,6 +328,10 @@ public class ReasoningNode implements NodeAction {
         } else {
             String content = result.text();
             log.info("[ReasoningNode] LLM produced final answer ({} chars)", content != null ? content.length() : 0);
+            pushPhase(conversationId, "drafting_answer", Map.of(
+                    "iteration", accessor.iterationCount(),
+                    "answerChars", content != null ? content.length() : 0
+            ));
 
             return MateClawStateAccessor.output()
                     .needsToolCall(false)
@@ -347,4 +364,12 @@ public class ReasoningNode implements NodeAction {
             throw new RuntimeException("无法反序列化 forced_tool_call: " + e.getMessage(), e);
         }
     }
+
+    private void pushPhase(String conversationId, String phase, Map<String, Object> extra) {
+        if (streamTracker == null || !StringUtils.hasText(conversationId)) {
+            return;
+        }
+        streamTracker.updatePhase(conversationId, phase);
+        streamTracker.broadcastObject(conversationId, "phase", GraphEventPublisher.phase(phase, extra).data());
+    }
 }
diff --git a/mateclaw-server/src/main/java/vip/mate/agent/graph/node/SummarizingNode.java b/mateclaw-server/src/main/java/vip/mate/agent/graph/node/SummarizingNode.java
index 6095af3c..018c9589 100644
--- a/mateclaw-server/src/main/java/vip/mate/agent/graph/node/SummarizingNode.java
+++ b/mateclaw-server/src/main/java/vip/mate/agent/graph/node/SummarizingNode.java
@@ -82,6 +82,10 @@ public class SummarizingNode implements NodeAction {
 
         log.info("[SummarizingNode] Summarizing {} observations ({} total chars) for user query",
                 observations.size(), accessor.totalObservationChars());
+        pushPhase(conversationId, "summarizing_observations", Map.of(
+                "observationCount", observations.size(),
+                "summaryChars", accessor.totalObservationChars()
+        ));
 
         // 构建 summarize prompt
         StringBuilder observationText = new StringBuilder();
@@ -176,4 +180,12 @@ public class SummarizingNode implements NodeAction {
                         "summaryChars", summaryContent.length()))))
                 .build();
     }
+
+    private void pushPhase(String conversationId, String phase, Map<String, Object> extra) {
+        if (streamTracker == null || conversationId == null || conversationId.isEmpty()) {
+            return;
+        }
+        streamTracker.updatePhase(conversationId, phase);
+        streamTracker.broadcastObject(conversationId, "phase", GraphEventPublisher.phase(phase, extra).data());
+    }
 }
diff --git a/mateclaw-server/src/main/java/vip/mate/channel/web/ChatController.java b/mateclaw-server/src/main/java/vip/mate/channel/web/ChatController.java
index d6566c63..53afa1f1 100644
--- a/mateclaw-server/src/main/java/vip/mate/channel/web/ChatController.java
+++ b/mateclaw-server/src/main/java/vip/mate/channel/web/ChatController.java
@@ -1218,8 +1218,14 @@ public class ChatController {
                     runtimeProviderId = String.valueOf(data.getOrDefault("runtimeProviderId", ""));
                     return;
                 }
+                if ("phase".equals(delta.eventType())) {
+                    String phase = String.valueOf(delta.eventData().getOrDefault("phase", ""));
+                    if (!phase.isBlank()) {
+                        streamTracker.updatePhase(conversationId, phase);
+                    }
+                }
                 // 累积工具调用事件，用于持久化到消息历史
-                accumulateToolEvent(delta.eventType(), delta.eventData());
+                accumulateToolEvent(delta.eventType(), delta.eventData(), conversationId);
                 try {
                     broadcastEvent(conversationId, delta.eventType(), delta.eventData());
                 } catch (Exception e) {
@@ -1229,6 +1235,7 @@ public class ChatController {
             }
             if (delta.content() != null && !delta.content().isBlank()) {
                 content.append(delta.content());
+                streamTracker.updatePhase(conversationId, "drafting_answer");
                 if (!delta.persistenceOnly()) {
                     broadcastEvent(conversationId, "content_delta", Map.of("delta", delta.content()));
                 }
@@ -1243,9 +1250,10 @@ public class ChatController {
 
         boolean isAwaitingApproval() { return awaitingApproval; }
 
-        private void accumulateToolEvent(String eventType, Map<String, Object> data) {
+        private void accumulateToolEvent(String eventType, Map<String, Object> data, String conversationId) {
             if ("tool_approval_requested".equals(eventType)) {
                 awaitingApproval = true;
+                streamTracker.updatePhase(conversationId, "awaiting_approval");
             } else if ("tool_call_started".equals(eventType)) {
                 Map<String, Object> tc = new LinkedHashMap<>();
                 tc.put("name", data.getOrDefault("toolName", ""));
diff --git a/mateclaw-ui/src/components/chat/StreamLoadingBar.vue b/mateclaw-ui/src/components/chat/StreamLoadingBar.vue
index 3feedf0f..857871d8 100644
--- a/mateclaw-ui/src/components/chat/StreamLoadingBar.vue
+++ b/mateclaw-ui/src/components/chat/StreamLoadingBar.vue
@@ -2,8 +2,12 @@
   <div v-if="isLoading && !hideBar" class="stream-loading-bar">
     <div class="stream-loading-content">
       <span class="loading-icon" :class="phaseIconClass">{{ phaseIcon }}</span>
-      <span class="loading-text" :class="phaseTextClass">{{ statusText }}</span>
-      <span v-if="runningToolName" class="loading-tool">{{ runningToolName }}</span>
+      <div class="loading-copy">
+        <span class="loading-text" :class="phaseTextClass">{{ statusText }}</span>
+        <span v-if="runningToolName" class="loading-tool">{{ runningToolName }}</span>
+        <span v-if="statusDetail" class="loading-detail">{{ statusDetail }}</span>
+        <span v-if="slowHint" class="loading-slow">{{ slowHint }}</span>
+      </div>
     </div>
     <div class="loading-right">
       <!-- 排队指示器 -->
@@ -25,7 +29,7 @@
 <script setup lang="ts">
 import { ref, computed, watch, onBeforeUnmount } from 'vue'
 import { useI18n } from 'vue-i18n'
-import type { StreamPhase } from '@/types'
+import type { PhaseEventData, StreamPhase } from '@/types'
 
 interface Props {
   isLoading: boolean
@@ -36,6 +40,8 @@ interface Props {
   promptTokens?: number
   /** 当前流阶段 */
   phase?: StreamPhase
+  /** 最近一次阶段事件 */
+  phaseInfo?: PhaseEventData | null
   /** 当前正在执行的工具名称 */
   runningToolName?: string
   /** 是否有排队消息 */
@@ -49,6 +55,7 @@ const props = withDefaults(defineProps<Props>(), {
   completionTokens: 0,
   promptTokens: 0,
   phase: 'thinking',
+  phaseInfo: null,
   runningToolName: '',
   hasQueued: false,
 })
@@ -57,10 +64,17 @@ const { t } = useI18n()
 
 // Phase-aware 状态文本（i18n）
 const phaseI18nMap: Record<string, string> = {
+  preparing_context: 'chat.streamPreparingContext',
+  reading_memory: 'chat.streamReadingMemory',
+  reasoning: 'chat.streamReasoning',
+  drafting_answer: 'chat.streamDraftingAnswer',
+  summarizing_observations: 'chat.streamSummarizingObservations',
   thinking: 'chat.streamThinking',
   streaming: 'chat.streamGenerating',
   executing_tool: 'chat.streamExecutingTool',
   awaiting_approval: 'chat.streamAwaitingApproval',
+  finalizing: 'chat.streamFinalizing',
+  failed: 'chat.streamFailed',
   interrupting: 'chat.streamInterrupting',
   queued: 'chat.streamQueued',
   reconnecting: 'chat.streamReconnecting',
@@ -77,10 +91,17 @@ const statusText = computed(() => {
 
 const phaseIcon = computed(() => {
   switch (props.phase) {
+    case 'preparing_context': return '◔'
+    case 'reading_memory': return '⌕'
+    case 'reasoning': return '◐'
+    case 'drafting_answer': return '✎'
+    case 'summarizing_observations': return '≋'
     case 'thinking': return '◐'
     case 'streaming': return '▸'
     case 'executing_tool': return '⚙'
     case 'awaiting_approval': return '⏸'
+    case 'finalizing': return '✓'
+    case 'failed': return '!'
     case 'interrupting': return '⊘'
     case 'queued': return '◷'
     case 'reconnecting': return '↻'
@@ -91,6 +112,7 @@ const phaseIcon = computed(() => {
 const phaseIconClass = computed(() => {
   switch (props.phase) {
     case 'awaiting_approval': return 'icon-paused'
+    case 'failed': return 'icon-warning'
     case 'interrupting': return 'icon-warning'
     case 'queued': return 'icon-queued'
     default: return 'icon-active'
@@ -100,12 +122,53 @@ const phaseIconClass = computed(() => {
 const phaseTextClass = computed(() => {
   switch (props.phase) {
     case 'awaiting_approval': return 'text-amber'
+    case 'failed': return 'text-red'
     case 'interrupting': return 'text-red'
     case 'queued': return 'text-blue'
     default: return ''
   }
 })
 
+const detailI18nMap: Record<string, string> = {
+  preparing_context: 'chat.streamPreparingContextDetail',
+  reading_memory: 'chat.streamReadingMemoryDetail',
+  reasoning: 'chat.streamReasoningDetail',
+  drafting_answer: 'chat.streamDraftingAnswerDetail',
+  summarizing_observations: 'chat.streamSummarizingObservationsDetail',
+  thinking: 'chat.streamThinkingDetail',
+  streaming: 'chat.streamGeneratingDetail',
+  executing_tool: 'chat.streamExecutingToolDetail',
+  awaiting_approval: 'chat.streamAwaitingApprovalDetail',
+  finalizing: 'chat.streamFinalizingDetail',
+  failed: 'chat.streamFailedDetail',
+}
+
+const statusDetail = computed(() => {
+  if (props.phaseInfo?.phase) {
+    const key = detailI18nMap[props.phaseInfo.phase]
+    if (key) return t(key)
+  }
+  const key = detailI18nMap[props.phase]
+  return key ? t(key) : ''
+})
+
+const slowHint = computed(() => {
+  const secs = elapsedSeconds.value
+  if (props.phase === 'summarizing_observations' && secs >= 15) {
+    return t('chat.streamSlowSummarizing')
+  }
+  if ((props.phase === 'reasoning' || props.phase === 'thinking') && secs >= 20) {
+    return t('chat.streamSlowReasoning')
+  }
+  if (secs >= 45) {
+    return t('chat.streamSlowGeneral')
+  }
+  if (secs >= 8) {
+    return t('chat.streamSlowShort')
+  }
+  return ''
+})
+
 // 耗时统计
 const elapsedSeconds = ref(0)
 const elapsedTime = ref('0s')
@@ -174,11 +237,18 @@ onBeforeUnmount(() => {
 
 .stream-loading-content {
   display: flex;
-  align-items: center;
+  align-items: flex-start;
   gap: 6px;
   color: #f97316;
 }
 
+.loading-copy {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  min-width: 0;
+}
+
 .loading-icon {
   font-size: 16px;
   font-weight: bold;
@@ -214,6 +284,7 @@ onBeforeUnmount(() => {
 .text-blue { color: #3b82f6; }
 
 .loading-tool {
+  align-self: flex-start;
   font-family: ui-monospace, 'SFMono-Regular', Consolas, monospace;
   font-size: 12px;
   background: rgba(249, 115, 22, 0.1);
@@ -226,6 +297,16 @@ onBeforeUnmount(() => {
   white-space: nowrap;
 }
 
+.loading-detail {
+  font-size: 12px;
+  color: var(--mc-text-secondary, #94a3b8);
+}
+
+.loading-slow {
+  font-size: 12px;
+  color: #f59e0b;
+}
+
 .loading-right {
   display: flex;
   align-items: center;
diff --git a/mateclaw-ui/src/composables/chat/useChat.ts b/mateclaw-ui/src/composables/chat/useChat.ts
index 54631f2d..3cc35949 100644
--- a/mateclaw-ui/src/composables/chat/useChat.ts
+++ b/mateclaw-ui/src/composables/chat/useChat.ts
@@ -12,7 +12,7 @@ import { ref, computed } from 'vue'
 import { useMessages } from './useMessages'
 import { useStream } from './useStream'
 import { useMessageQueue } from './useMessageQueue'
-import type { Message, MessageContentPart, StreamPhase, HeartbeatData, QueuedMessage } from '@/types'
+import type { Message, MessageContentPart, StreamPhase, HeartbeatData, QueuedMessage, PhaseEventData } from '@/types'
 import { classifyBackendError, type ChatErrorInfo } from '@/types/chatError'
 
 export interface UseChatOptions {
@@ -46,6 +46,8 @@ export interface UseChatReturn {
   isGenerating: import('vue').ComputedRef<boolean>
   /** 当前流阶段 */
   streamPhase: import('vue').Ref<StreamPhase>
+  /** 最近一次阶段事件 */
+  phaseInfo: import('vue').Ref<PhaseEventData | null>
   /** 当前错误 */
   error: import('vue').Ref<Error | null>
   /** 排队的消息 */
@@ -105,6 +107,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
   /** stopGeneration 的 fallback timer，新流开始时必须清除，防止误杀新连接 */
   let stopFallbackTimer: ReturnType<typeof setTimeout> | null = null
   const streamPhase = ref<StreamPhase>('idle')
+  const phaseInfo = ref<PhaseEventData | null>(null)
   const heartbeat = ref<HeartbeatData | null>(null)
   /** Track which conversation the current stream belongs to */
   let streamConversationId = ''
@@ -159,7 +162,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
   stream.on('content_delta', (data) => {
     if (currentAssistantId.value) {
       appendMessageContent(currentAssistantId.value, data.delta || '', 'text')
-      if (streamPhase.value === 'thinking') {
+      if (['thinking', 'reasoning', 'drafting_answer', 'preparing_context'].includes(streamPhase.value)) {
         streamPhase.value = 'streaming'
       }
     }
@@ -168,7 +171,9 @@ export function useChat(options: UseChatOptions): UseChatReturn {
   stream.on('thinking_delta', (data) => {
     if (currentAssistantId.value) {
       appendMessageContent(currentAssistantId.value, data.delta || '', 'thinking')
-      streamPhase.value = 'thinking'
+      if (streamPhase.value !== 'summarizing_observations') {
+        streamPhase.value = 'thinking'
+      }
     }
   })
 
@@ -265,6 +270,9 @@ export function useChat(options: UseChatOptions): UseChatReturn {
 
     streamPhase.value = data.status === 'awaiting_approval' ? 'awaiting_approval'
       : data.status === 'stopped' ? 'stopped' : 'completed'
+    if (data.status !== 'awaiting_approval') {
+      phaseInfo.value = null
+    }
 
     // 兜底清理排队状态（如果 queued_input_started 已经处理了则这里是 no-op）
     if (!messageQueue.hasQueued.value) {
@@ -307,6 +315,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
     }
     error.value = new Error(data.message || '请求失败')
     streamPhase.value = 'idle'
+    phaseInfo.value = null
     // 错误时清理排队状态，避免脏残留
     messageQueue.clear()
 
@@ -369,11 +378,16 @@ export function useChat(options: UseChatOptions): UseChatReturn {
 
   stream.on('phase', (data) => {
     const phase = data.phase as StreamPhase
-    if (phase) streamPhase.value = phase
+    if (phase) {
+      streamPhase.value = phase
+      phaseInfo.value = { ...data, phase }
+    }
     if (currentAssistantId.value) {
       const msg = getMessage(currentAssistantId.value)
       if (msg) {
         const metadata = parseMetadata((msg as any).metadata)
+        // 去重：相同 phase 不触发 updateMessage，避免不必要的 Vue 响应式更新
+        if (metadata.currentPhase === data.phase) return
         updateMessage(currentAssistantId.value, {
           ...msg,
           metadata: { ...metadata, currentPhase: data.phase }
@@ -538,10 +552,17 @@ export function useChat(options: UseChatOptions): UseChatReturn {
     // 从 heartbeat 中更新 phase（如果前端还没有更精确的 phase）
     if (data.currentPhase && streamPhase.value !== 'interrupting') {
       const phaseMap: Record<string, StreamPhase> = {
+        'preparing_context': 'preparing_context',
+        'reading_memory': 'reading_memory',
+        'reasoning': 'reasoning',
+        'drafting_answer': 'drafting_answer',
+        'summarizing_observations': 'summarizing_observations',
         'thinking': 'thinking',
         'streaming': 'streaming',
         'executing_tool': 'executing_tool',
         'awaiting_approval': 'awaiting_approval',
+        'finalizing': 'finalizing',
+        'failed': 'failed',
       }
       const mapped = phaseMap[data.currentPhase]
       if (mapped) streamPhase.value = mapped
@@ -594,6 +615,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
     assistantMessage.conversationId = data.conversationId || streamConversationId
     currentAssistantId.value = assistantMessage.id as string
     streamPhase.value = 'thinking'
+    phaseInfo.value = null
   })
 
   // ===== 发送消息（支持运行中继续发送） =====
@@ -619,6 +641,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
     errorFired = false
     streamConversationId = conversationId
     streamPhase.value = 'thinking'
+    phaseInfo.value = null
 
     try {
       if (!isApprovalCommand) {
@@ -684,6 +707,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
         assistantMessage.conversationId = conversationId
         currentAssistantId.value = assistantMessage.id as string
         streamPhase.value = 'thinking'
+        phaseInfo.value = null
         await stream.connect({
           agentId,
           message: content,
@@ -716,6 +740,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
 
     // 标记为停止中（让 UI 立即反馈）
     streamPhase.value = 'stopped'
+    phaseInfo.value = null
 
     if (streamConversationId) {
       try {
@@ -783,6 +808,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
     streamConversationId = conversationId
     error.value = null
     errorFired = false
+    phaseInfo.value = null
 
     // 创建 assistant 占位消息用于接收重连后的流数据
     const assistantMessage = createAssistantMessage('')
@@ -841,6 +867,7 @@ export function useChat(options: UseChatOptions): UseChatReturn {
     messages,
     isGenerating,
     streamPhase,
+    phaseInfo,
     error,
     queuedMessage: messageQueue.queuedMessage,
     hasQueued: messageQueue.hasQueued,
diff --git a/mateclaw-ui/src/i18n/locales/en-US.ts b/mateclaw-ui/src/i18n/locales/en-US.ts
index 32c06d81..ce892fe9 100644
--- a/mateclaw-ui/src/i18n/locales/en-US.ts
+++ b/mateclaw-ui/src/i18n/locales/en-US.ts
@@ -136,15 +136,37 @@ export default {
     queuedReplace: 'Message queued. Press Enter to replace...',
     queuedBadge: '{count} queued',
     // Stream status
+    streamPreparingContext: 'Preparing context...',
+    streamReadingMemory: 'Reading memory...',
+    streamReasoning: 'Analyzing...',
+    streamDraftingAnswer: 'Drafting answer...',
+    streamSummarizingObservations: 'Organizing information...',
     streamThinking: 'Thinking...',
     streamGenerating: 'Generating...',
     streamExecutingTool: 'Executing tool...',
     streamAwaitingApproval: 'Awaiting approval',
+    streamFinalizing: 'Finalizing...',
+    streamFailed: 'Interrupted',
     streamInterrupting: 'Interrupting...',
     streamQueued: 'Queued, waiting...',
     streamReconnecting: 'Reconnecting...',
     streamStopped: 'Stopped',
     streamCompleted: 'Completed',
+    streamPreparingContextDetail: 'Collecting the current question, conversation history, and required context.',
+    streamReadingMemoryDetail: 'Looking up the most relevant long-term memory and recent notes for this question.',
+    streamReasoningDetail: 'Comparing options and organizing the answer structure based on the available information.',
+    streamDraftingAnswerDetail: 'The main analysis is done. Turning it into a readable answer now.',
+    streamSummarizingObservationsDetail: 'A larger tool result just came back. Condensing the key points before continuing.',
+    streamThinkingDetail: 'The model is still reasoning internally. Visible text may not appear immediately.',
+    streamGeneratingDetail: 'Visible output has started and more content should appear shortly.',
+    streamExecutingToolDetail: 'Reading files, querying data, or running the necessary operation for a more accurate answer.',
+    streamAwaitingApprovalDetail: 'Your confirmation is required before continuing.',
+    streamFinalizingDetail: 'Saving the result and closing out this response.',
+    streamFailedDetail: 'This run did not finish cleanly, but you can retry or keep asking follow-up questions.',
+    streamSlowShort: 'This step is taking a bit longer than usual, but it is still running.',
+    streamSlowSummarizing: 'Organizing a larger tool result. This step often takes longer.',
+    streamSlowReasoning: 'The model is doing heavier analysis here. This is not a frozen connection.',
+    streamSlowGeneral: 'Processing is still ongoing. The time is currently being spent in internal analysis.',
     // Approval bar
     approvalAllow: 'Allow',
     approvalExecute: 'to execute?',
diff --git a/mateclaw-ui/src/i18n/locales/zh-CN.ts b/mateclaw-ui/src/i18n/locales/zh-CN.ts
index d0390dce..7e7a1354 100644
--- a/mateclaw-ui/src/i18n/locales/zh-CN.ts
+++ b/mateclaw-ui/src/i18n/locales/zh-CN.ts
@@ -136,15 +136,37 @@ export default {
     queuedReplace: '消息已排队，按回车替换...',
     queuedBadge: '{count} 条排队',
     // 流状态
+    streamPreparingContext: '准备上下文...',
+    streamReadingMemory: '读取记忆...',
+    streamReasoning: '分析问题...',
+    streamDraftingAnswer: '生成回答...',
+    streamSummarizingObservations: '整理信息...',
     streamThinking: '思考中...',
     streamGenerating: '生成中...',
     streamExecutingTool: '执行工具...',
     streamAwaitingApproval: '等待审批',
+    streamFinalizing: '正在收尾...',
+    streamFailed: '本轮中断',
     streamInterrupting: '中断中...',
     streamQueued: '排队中...',
     streamReconnecting: '重新连接...',
     streamStopped: '已停止',
     streamCompleted: '已完成',
+    streamPreparingContextDetail: '正在收集当前问题、历史对话和必要配置。',
+    streamReadingMemoryDetail: '正在查找与你当前问题最相关的长期记忆和今日记录。',
+    streamReasoningDetail: '正在基于现有信息进行判断、比较方案并组织回答结构。',
+    streamDraftingAnswerDetail: '已经完成主要分析，正在把结论写成可直接阅读的答案。',
+    streamSummarizingObservationsDetail: '刚刚拿到了较多工具结果，正在提炼重点，避免回答冗长或遗漏关键信息。',
+    streamThinkingDetail: '正在做内部推理，这一步未必会立即产生正文。',
+    streamGeneratingDetail: '已经进入可见输出阶段，会陆续显示结果。',
+    streamExecutingToolDetail: '正在读取文件、查询数据或执行必要操作，以便给出更准确的答案。',
+    streamAwaitingApprovalDetail: '接下来需要你的确认，确认后我会继续执行。',
+    streamFinalizingDetail: '正在保存结果并结束当前响应。',
+    streamFailedDetail: '这次处理没有完整完成，但你可以继续追问或重试。',
+    streamSlowShort: '这一步比平时慢一些，但系统仍在处理中。',
+    streamSlowSummarizing: '正在整理较长的工具结果。因为信息较多，这一步可能需要更久。',
+    streamSlowReasoning: '正在做较复杂的分析和取舍，不是卡住。',
+    streamSlowGeneral: '处理还在继续，当前主要耗时在内部分析，不代表连接中断。',
     // 审批栏
     approvalAllow: '允许',
     approvalExecute: '执行？',
diff --git a/mateclaw-ui/src/types/index.ts b/mateclaw-ui/src/types/index.ts
index 0bd0ac69..4a6a0b3c 100644
--- a/mateclaw-ui/src/types/index.ts
+++ b/mateclaw-ui/src/types/index.ts
@@ -362,10 +362,17 @@ export const CHANNEL_FIELD_DEFS: Record<string, ChannelFieldDef[]> = {
 
 /** 流阶段（前后端统一命名） */
 export type StreamPhase =
+  | 'preparing_context' // 正在准备上下文
+  | 'reading_memory'    // 正在读取记忆/历史
+  | 'reasoning'         // 正在推理分析
+  | 'drafting_answer'   // 正在起草答案
+  | 'summarizing_observations' // 正在整理工具结果
   | 'thinking'         // 模型推理中
   | 'streaming'        // 正在输出文本
   | 'executing_tool'   // 正在执行工具
   | 'awaiting_approval' // 等待审批
+  | 'finalizing'       // 正在收尾
+  | 'failed'           // 已失败
   | 'interrupting'     // 正在中断
   | 'queued'           // 有排队消息
   | 'reconnecting'     // 正在重连
@@ -373,6 +380,17 @@ export type StreamPhase =
   | 'completed'        // 已完成
   | 'idle'             // 空闲
 
+/** 阶段事件数据 */
+export interface PhaseEventData {
+  phase: StreamPhase | string
+  timestamp?: number
+  toolName?: string
+  toolCount?: number
+  observationCount?: number
+  summaryChars?: number
+  iteration?: number
+}
+
 /** 排队的用户消息 */
 export interface QueuedMessage {
   /** 消息内容 */
diff --git a/mateclaw-ui/src/views/ChatConsole.vue b/mateclaw-ui/src/views/ChatConsole.vue
index 57ed1508..f8a52039 100644
--- a/mateclaw-ui/src/views/ChatConsole.vue
+++ b/mateclaw-ui/src/views/ChatConsole.vue
@@ -159,6 +159,7 @@
         :completion-tokens="currentGeneratingTokens"
         :prompt-tokens="currentPromptTokens"
         :phase="streamPhase"
+        :phase-info="phaseInfo"
         :running-tool-name="currentRunningToolName"
         :has-queued="hasQueued"
       />
@@ -363,6 +364,7 @@ const {
   messages,
   isGenerating,
   streamPhase,
+  phaseInfo,
   queuedMessage,
   hasQueued,
   queueSize,