diff --git a/web/app/components/workflow/hooks/use-workflow-run-event/use-workflow-reasoning.ts b/web/app/components/workflow/hooks/use-workflow-run-event/use-workflow-reasoning.ts
deleted file mode 100644
index 9abfeca0383..00000000000
--- a/web/app/components/workflow/hooks/use-workflow-run-event/use-workflow-reasoning.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import type { ReasoningChunkResponse } from '@/types/workflow'
-import { produce } from 'immer'
-import { useCallback } from 'react'
-import { useWorkflowStore } from '@/app/components/workflow/store'
-
-export const useWorkflowReasoning = () => {
-  const workflowStore = useWorkflowStore()
-
-  const handleWorkflowReasoning = useCallback((params: ReasoningChunkResponse) => {
-    const { data: { reasoning, node_id, is_final } } = params
-    const {
-      workflowRunningData,
-      setWorkflowRunningData,
-    } = workflowStore.getState()
-
-    setWorkflowRunningData(produce(workflowRunningData!, (draft) => {
-      const reasoningContent = (draft.reasoningContent ||= {})
-      // key by LLM node so multiple nodes' reasoning stays separated
-      const key = node_id || '_'
-      if (reasoning)
-        reasoningContent[key] = (reasoningContent[key] || '') + reasoning
-      if (is_final)
-        draft.reasoningFinished = true
-    }))
-  }, [workflowStore])
-
-  return {
-    handleWorkflowReasoning,
-  }
-}