diff --git a/web/app/components/workflow/hooks/use-nodes-interactions.ts b/web/app/components/workflow/hooks/use-nodes-interactions.ts
index dcad1beaad..84b3ec26ef 100644
--- a/web/app/components/workflow/hooks/use-nodes-interactions.ts
+++ b/web/app/components/workflow/hooks/use-nodes-interactions.ts
@@ -11,6 +11,7 @@ import type { PluginDefaultValue } from '../block-selector/types'
 import type { GroupHandler, GroupMember, GroupNodeData } from '../nodes/group/types'
 import type { IterationNodeType } from '../nodes/iteration/types'
 import type { LoopNodeType } from '../nodes/loop/types'
+import type { ToolNodeType } from '../nodes/tool/types'
 import type { VariableAssignerNodeType } from '../nodes/variable-assigner/types'
 import type { Edge, Node, OnNodeAdd } from '../types'
 import type { RAGPipelineVariables } from '@/models/pipeline'
@@ -33,15 +34,18 @@ import {
   X_OFFSET,
   Y_OFFSET,
 } from '../constants'
+import { useHooksStore } from '../hooks-store'
 import { getNodeUsedVars } from '../nodes/_base/components/variable/utils'
+import { VarKindType } from '../nodes/_base/types'
 import { CUSTOM_ITERATION_START_NODE } from '../nodes/iteration-start/constants'
 import { useNodeIterationInteractions } from '../nodes/iteration/use-interactions'
 import { CUSTOM_LOOP_START_NODE } from '../nodes/loop-start/constants'
 import { useNodeLoopInteractions } from '../nodes/loop/use-interactions'
+import { buildContextGenStorageKey, clearContextGenStorage } from '../nodes/tool/components/context-generate-modal/utils/storage'
 import { CUSTOM_NOTE_NODE } from '../note-node/constants'
 import { useWorkflowStore } from '../store'
-import { BlockEnum, ControlMode, isTriggerNode } from '../types'
 
+import { BlockEnum, ControlMode, isTriggerNode } from '../types'
 import {
   generateNewNode,
   genNewNodeTitleFromOld,
@@ -242,10 +246,37 @@ export const useNodesInteractions = () => {
     y: number
   })
   const { nodesMap: nodesMetaDataMap } = useNodesMetaData()
+  const configsMap = useHooksStore(s => s.configsMap)
 
   const { saveStateToHistory } = useWorkflowHistory()
   const autoGenerateWebhookUrl = useAutoGenerateWebhookUrl()
 
+  const clearContextGenStorageByParam = useCallback((toolNodeId: string, paramKey: string) => {
+    if (!toolNodeId || !paramKey)
+      return
+    const storageKey = buildContextGenStorageKey(configsMap?.flowId, toolNodeId, paramKey)
+    clearContextGenStorage(storageKey)
+  }, [configsMap?.flowId])
+
+  const cleanupContextGenStorage = useCallback((nodeId: string, nodeData?: Node['data']) => {
+    const extSeparator = '_ext_'
+    const extIndex = nodeId.indexOf(extSeparator)
+    if (extIndex > 0) {
+      const toolNodeId = nodeId.slice(0, extIndex)
+      const paramKey = nodeId.slice(extIndex + extSeparator.length)
+      clearContextGenStorageByParam(toolNodeId, paramKey)
+    }
+
+    if (nodeData?.type !== BlockEnum.Tool)
+      return
+
+    const toolParams = (nodeData as ToolNodeType).tool_parameters || {}
+    Object.entries(toolParams).forEach(([paramKey, param]) => {
+      if (param?.type === VarKindType.nested_node)
+        clearContextGenStorageByParam(nodeId, paramKey)
+    })
+  }, [clearContextGenStorageByParam])
+
   const handleNodeDragStart = useCallback<NodeDragHandler>(
     (_, node) => {
       workflowStore.setState({ nodeAnimation: false })
@@ -1027,6 +1058,9 @@ export const useNodesInteractions = () => {
         }
       }
 
+      // Reason: remove context-generate caches for deleted nested-node params.
+      cleanupContextGenStorage(nodeId, currentNode.data)
+
       const connectedEdges = getConnectedEdges([{ id: nodeId } as Node], edges)
       const nodesConnectedSourceOrTargetHandleIdsMap
         = getNodesConnectedSourceOrTargetHandleIdsMap(
@@ -1082,6 +1116,7 @@ export const useNodesInteractions = () => {
       t,
       nodesMetaDataMap,
       deleteNodeInspectorVars,
+      cleanupContextGenStorage,
     ],
   )
 
diff --git a/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts b/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts
index 7d857499c1..a5db2ad989 100644
--- a/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts
+++ b/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts
@@ -150,7 +150,7 @@ type UseContextGenerateResult = {
   handleCompletionParamsChange: (newParams: FormValue) => void
   handleGenerate: () => Promise<void>
   handleReset: () => void
-  handleFetchSuggestedQuestions: () => Promise<void>
+  handleFetchSuggestedQuestions: (options?: { force?: boolean }) => Promise<void>
   abortSuggestedQuestions: () => void
   resetSuggestions: () => void
   defaultAssistantMessage: string
@@ -364,12 +364,13 @@ const useContextGenerate = ({
     clearVersions()
   }, [clearVersions, isGenerating, setPromptMessages])
 
-  const handleFetchSuggestedQuestions = useCallback(async () => {
+  const handleFetchSuggestedQuestions = useCallback(async (options?: { force?: boolean }) => {
+    const forceFetch = options?.force
     if (!toolNodeId || !paramKey)
       return
     if (!modelConfig.name || !modelConfig.provider)
       return
-    if (hasFetchedSuggestions || isFetchingSuggestions || !isInitView)
+    if (!forceFetch && (hasFetchedSuggestions || isFetchingSuggestions || !isInitView))
       return
 
     setFetchingSuggestionsTrue()
diff --git a/web/app/components/workflow/nodes/tool/components/context-generate-modal/index.tsx b/web/app/components/workflow/nodes/tool/components/context-generate-modal/index.tsx
index 45da9a4bf2..d09d1ad131 100644
--- a/web/app/components/workflow/nodes/tool/components/context-generate-modal/index.tsx
+++ b/web/app/components/workflow/nodes/tool/components/context-generate-modal/index.tsx
@@ -131,6 +131,13 @@ const ContextGenerateModal = forwardRef<ContextGenerateModalHandle, Props>(({
     onClose()
   }, [abortSuggestedQuestions, onClose, resetSuggestions])
 
+  const handleResetWithSuggestions = useCallback(() => {
+    abortSuggestedQuestions()
+    handleReset()
+    resetSuggestions()
+    void handleFetchSuggestedQuestions({ force: true })
+  }, [abortSuggestedQuestions, handleFetchSuggestedQuestions, handleReset, resetSuggestions])
+
   useImperativeHandle(ref, () => ({
     onOpen: () => {
       void handleFetchSuggestedQuestions()
@@ -223,7 +230,7 @@ const ContextGenerateModal = forwardRef<ContextGenerateModalHandle, Props>(({
           inputValue={inputValue}
           onInputChange={setInputValue}
           onGenerate={handleGenerate}
-          onReset={handleReset}
+          onReset={handleResetWithSuggestions}
           suggestedQuestions={suggestedQuestions}
           hasFetchedSuggestions={hasFetchedSuggestions}
           model={model}