diff --git a/mateclaw-ui/src/i18n/locales/en-US.ts b/mateclaw-ui/src/i18n/locales/en-US.ts
index e9568074..4850d7f6 100644
--- a/mateclaw-ui/src/i18n/locales/en-US.ts
+++ b/mateclaw-ui/src/i18n/locales/en-US.ts
@@ -1221,7 +1221,8 @@ export default {
       taglinePreview: 'Card preview:',
       backstory: 'Backstory',
       backstoryHint: 'Invisible to users, felt in every conversation. Their experience, beliefs, and working principles.',
-      extraInstructions: 'Advanced: Additional Instructions',
+      advanced: 'Advanced',
+      extraInstructions: 'Additional Instructions',
       extraInstructionsHint: 'Optional. Use for output format, process checklists, or boundary rules.',
       maxIterations: 'Max Iterations',
       defaultThinkingLevel: 'Default Thinking Level',
@@ -1235,6 +1236,16 @@ export default {
       tagUndo: 'Undo',
       enabled: 'Enabled',
     },
+    guide: {
+      summary: 'Behavior Guide (AGENTS.md)',
+      desc: "This is the employee's behavior handbook (AGENTS.md): when to write memories, what goes in each file, and which memory tools are available. The Role/Goal/Backstory above are the employee's factory identity; evolving memories like PROFILE/MEMORY live in the Memory menu.",
+      empty: 'This employee has no behavior guide (AGENTS.md) yet.',
+      create: 'Create Behavior Guide',
+      saved: 'Saved',
+      addSection: 'Add Section',
+      addSectionPlaceholder: 'Section title',
+      scaffold: '## When to Write Memories\n\n(Describe when this employee should record to MEMORY.md / PROFILE.md.)\n\n## File Responsibilities\n\n(Describe what belongs in SOUL.md / PROFILE.md / MEMORY.md.)\n',
+    },
     thinkingLevels: {
       auto: 'Follow Model',
       off: 'Off',
diff --git a/mateclaw-ui/src/i18n/locales/zh-CN.ts b/mateclaw-ui/src/i18n/locales/zh-CN.ts
index 0d58b607..7a440674 100644
--- a/mateclaw-ui/src/i18n/locales/zh-CN.ts
+++ b/mateclaw-ui/src/i18n/locales/zh-CN.ts
@@ -1113,7 +1113,8 @@ export default {
       taglinePreview: '卡片预览：',
       backstory: '背景（Backstory）',
       backstoryHint: '用户看不见，但每一次对话都能感觉到。写他的经验、信念、做事原则。',
-      extraInstructions: '高级：补充指令',
+      advanced: '高级',
+      extraInstructions: '补充指令',
       extraInstructionsHint: '可选。用于细化输出格式、流程清单或边界规则。',
       maxIterations: '最大迭代次数',
       defaultThinkingLevel: '默认思考深度',
@@ -1127,6 +1128,16 @@ export default {
       tagUndo: '撤销',
       enabled: '启用',
     },
+    guide: {
+      summary: '行为指南（AGENTS.md）',
+      desc: '这里是该员工的行为手册（AGENTS.md）：规定何时写记忆、各文件放什么、可用的记忆工具。上方的岗位／目标／背景是员工的出厂身份；PROFILE／MEMORY 等可演化的记忆在「记忆」菜单管理。',
+      empty: '该员工还没有行为指南（AGENTS.md）。',
+      create: '创建行为指南',
+      saved: '已保存',
+      addSection: '新增小节',
+      addSectionPlaceholder: '小节标题',
+      scaffold: '## 何时写记忆\n\n（说明这个员工在什么情况下应当记录到 MEMORY.md / PROFILE.md。）\n\n## 文件职责\n\n（说明 SOUL.md / PROFILE.md / MEMORY.md 各自该放什么内容。）\n',
+    },
     thinkingLevels: {
       auto: '跟随模型',
       off: '关闭',
diff --git a/mateclaw-ui/src/views/Agents.vue b/mateclaw-ui/src/views/Agents.vue
index 06f3d3b1..a75d7125 100644
--- a/mateclaw-ui/src/views/Agents.vue
+++ b/mateclaw-ui/src/views/Agents.vue
@@ -341,10 +341,16 @@
             <div class="form-group full-width">
               <details class="advanced-prompt">
                 <summary class="advanced-prompt__summary">
-                  {{ t('agents.fields.extraInstructions') }}
+                  {{ t('agents.fields.advanced') }}
                 </summary>
+                <label class="form-label">{{ t('agents.fields.extraInstructions') }}</label>
                 <textarea v-model="profileForm.extra" class="form-textarea" rows="4" :placeholder="t('agents.placeholders.extraInstructions')"></textarea>
                 <p class="form-hint">{{ t('agents.fields.extraInstructionsHint') }}</p>
+                <div v-if="editingAgent" class="advanced-guide">
+                  <label class="form-label">{{ t('agents.guide.summary') }}</label>
+                  <p class="form-hint">{{ t('agents.guide.desc') }}</p>
+                  <AgentGuideEditor :agent-id="editingAgent.id" />
+                </div>
               </details>
             </div>
             <div class="form-group">
@@ -669,6 +675,7 @@ import type { Agent } from '@/types/index'
 import SkillIcon from '@/components/common/SkillIcon.vue'
 import SkillIconPicker from '@/components/common/SkillIconPicker.vue'
 import LivePanel from '@/components/live/LivePanel.vue'
+import AgentGuideEditor from './Agents/components/AgentGuideEditor.vue'
 import {
   emptyProfile,
   parsePrompt,
@@ -1957,6 +1964,8 @@ html.dark .seg-count.warn {
 }
 .advanced-prompt[open] > .advanced-prompt__summary { padding: 0 0 8px; border-bottom: 1px solid var(--mc-border-light); margin-bottom: 8px; }
 .advanced-prompt[open] > .advanced-prompt__summary::before { transform: rotate(90deg); }
+.advanced-prompt .form-textarea { width: 100%; box-sizing: border-box; }
+.advanced-guide { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--mc-border-light); }
 .modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 24px; border-top: 1px solid var(--mc-border-light); }
 
 @media (max-width: 900px) {
diff --git a/mateclaw-ui/src/views/Agents/components/AgentGuideEditor.vue b/mateclaw-ui/src/views/Agents/components/AgentGuideEditor.vue
new file mode 100644
index 00000000..92dec50f
--- /dev/null
+++ b/mateclaw-ui/src/views/Agents/components/AgentGuideEditor.vue
@@ -0,0 +1,157 @@
+<template>
+  <div class="guide-editor">
+    <div v-if="loading" class="guide-state">…</div>
+
+    <!-- Empty state: AGENTS.md not present or blank -->
+    <div v-else-if="sections.length === 0" class="guide-empty">
+      <p class="guide-empty__text">{{ t('agents.guide.empty') }}</p>
+      <button class="guide-create-btn" :disabled="saving" @click="createGuide">
+        {{ t('agents.guide.create') }}
+      </button>
+    </div>
+
+    <!-- Section cards -->
+    <div v-else class="guide-sections">
+      <MemorySection
+        v-for="(sec, idx) in sections"
+        :key="idx"
+        :section="sec"
+        :save-handler="(body: string) => saveSection(idx, body)"
+      />
+
+      <div class="guide-add">
+        <input
+          v-model="newHeading"
+          class="guide-add__input"
+          :placeholder="t('agents.guide.addSectionPlaceholder')"
+          @keyup.enter="addSection"
+        />
+        <button class="guide-add__btn" :disabled="!newHeading.trim() || saving" @click="addSection">
+          + {{ t('agents.guide.addSection') }}
+        </button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { agentContextApi } from '@/api/index'
+import { mcToast } from '@/composables/useMcToast'
+import MemorySection from '@/views/Memory/components/MemorySection.vue'
+import type { MemorySectionData } from '@/views/Memory/components/types'
+
+const props = defineProps<{ agentId: string | number }>()
+const { t } = useI18n()
+
+const FILE = 'AGENTS.md'
+const loading = ref(true)
+const saving = ref(false)
+const sections = ref<MemorySectionData[]>([])
+const newHeading = ref('')
+
+onMounted(load)
+
+async function load() {
+  loading.value = true
+  try {
+    const res: any = await agentContextApi.getFile(props.agentId, FILE)
+    sections.value = parseSections(res?.data?.content || '')
+  } catch {
+    // File may not exist yet — treat as empty so the create flow shows.
+    sections.value = []
+  } finally {
+    loading.value = false
+  }
+}
+
+/** Split into `## ` sections; content before the first heading is a synthetic preamble. */
+function parseSections(content: string): MemorySectionData[] {
+  if (!content.trim()) return []
+  const result: MemorySectionData[] = []
+  for (const part of content.split(/(?=^## )/m)) {
+    const match = part.match(/^## (.+)\n([\s\S]*)/)
+    if (match) {
+      result.push({ heading: match[1].trim(), body: match[2].trim(), userEdited: false })
+    } else if (part.trim() && result.length === 0) {
+      result.push({ heading: t('memory.memoryBrowser.header'), body: part.trim(), userEdited: false, synthetic: true })
+    }
+  }
+  return result
+}
+
+/** Re-serialize the local sections back into a whole AGENTS.md document. */
+function serialize(secs: MemorySectionData[]): string {
+  return secs
+    .map(s => (s.synthetic ? s.body.trim() : `## ${s.heading}\n${s.body.trim()}`))
+    .filter(Boolean)
+    .join('\n\n') + '\n'
+}
+
+async function saveSection(idx: number, body: string) {
+  const next = sections.value.map((s, i) => (i === idx ? { ...s, body } : s))
+  await agentContextApi.saveFile(props.agentId, FILE, serialize(next))
+  mcToast.success(t('agents.guide.saved'))
+  await load()
+}
+
+async function createGuide() {
+  saving.value = true
+  try {
+    await agentContextApi.saveFile(props.agentId, FILE, t('agents.guide.scaffold'))
+    mcToast.success(t('agents.guide.saved'))
+    await load()
+  } catch (e: any) {
+    mcToast.error(e?.message || 'Save failed')
+  } finally {
+    saving.value = false
+  }
+}
+
+async function addSection() {
+  const heading = newHeading.value.trim()
+  if (!heading) return
+  saving.value = true
+  try {
+    const next = [...sections.value, { heading, body: '', userEdited: false }]
+    await agentContextApi.saveFile(props.agentId, FILE, serialize(next))
+    newHeading.value = ''
+    await load()
+  } catch (e: any) {
+    mcToast.error(e?.message || 'Save failed')
+  } finally {
+    saving.value = false
+  }
+}
+</script>
+
+<style scoped>
+.guide-editor { margin-top: 8px; }
+.guide-state { font-size: 13px; color: var(--mc-text-tertiary); padding: 8px 0; }
+.guide-empty {
+  display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
+  padding: 14px 16px; border-radius: 12px; background: var(--mc-bg-sunken);
+}
+.guide-empty__text { margin: 0; font-size: 13px; color: var(--mc-text-secondary); }
+.guide-create-btn {
+  padding: 6px 14px; border-radius: 8px; font-size: 12px; font-weight: 500;
+  background: var(--mc-primary); color: #fff; border: 1px solid var(--mc-primary);
+  cursor: pointer; transition: all 0.12s;
+}
+.guide-create-btn:disabled { opacity: 0.4; cursor: not-allowed; }
+.guide-sections { display: flex; flex-direction: column; gap: 10px; }
+.guide-add { display: flex; gap: 8px; align-items: center; }
+.guide-add__input {
+  flex: 1; padding: 8px 12px; border: 1px solid var(--mc-border); border-radius: 8px;
+  background: var(--mc-bg-elevated); font-size: 13px; color: var(--mc-text-primary); outline: none;
+}
+.guide-add__input:focus { border-color: var(--mc-primary); }
+.guide-add__btn {
+  padding: 8px 14px; border-radius: 8px; font-size: 12px; font-weight: 500;
+  background: transparent; color: var(--mc-text-secondary); border: 1px solid var(--mc-border);
+  cursor: pointer; white-space: nowrap; transition: all 0.12s;
+}
+.guide-add__btn:disabled { opacity: 0.4; cursor: not-allowed; }
+.guide-add__btn:not(:disabled):hover { border-color: var(--mc-primary); color: var(--mc-primary); }
+</style>