diff --git a/web/app/components/workflow/nodes/human-input/components/single-run-form.tsx b/web/app/components/workflow/nodes/human-input/components/single-run-form.tsx
index f295455603..9dd4dccbb1 100644
--- a/web/app/components/workflow/nodes/human-input/components/single-run-form.tsx
+++ b/web/app/components/workflow/nodes/human-input/components/single-run-form.tsx
@@ -34,7 +34,6 @@ const FormContent = ({
   const [inputs, setInputs] = useState(defaultInputs)
   const [isSubmitting, setIsSubmitting] = useState(false)
 
-  // use immer
   const handleInputsChange = (name: string, value: any) => {
     setInputs(prev => ({
       ...prev,
diff --git a/web/app/components/workflow/nodes/human-input/hooks/use-single-run-form-params.ts b/web/app/components/workflow/nodes/human-input/hooks/use-single-run-form-params.ts
index b2f7a6692d..6b66875008 100644
--- a/web/app/components/workflow/nodes/human-input/hooks/use-single-run-form-params.ts
+++ b/web/app/components/workflow/nodes/human-input/hooks/use-single-run-form-params.ts
@@ -61,18 +61,28 @@ const useSingleRunFormParams = ({
   const fetchURL = useMemo(() => {
     if (!appId)
       return ''
-    if (isWorkflowMode) {
-      return `/apps/${appId}/advanced-chat/workflows/draft/human_input/nodes/${id}/form`
+    if (!isWorkflowMode) {
+      return `/apps/${appId}/advanced-chat/workflows/draft/human-input/nodes/${id}/form`
     }
     else {
-      return `/apps/${appId}/workflows/draft/human_input/nodes/${id}/form`
+      return `/apps/${appId}/workflows/draft/human-input/nodes/${id}/form`
     }
   }, [appId, id, isWorkflowMode])
 
   const handleFetchFormContent = useCallback(async (inputs: Record<string, any>) => {
     if (!fetchURL)
       return null
-    const data = await fetchHumanInputNodeStepRunForm(fetchURL, { inputs })
+    let requestParamsObj
+    Object.keys(inputs).forEach((key) => {
+      if (inputs[key] === undefined) {
+        delete inputs[key]
+      }
+    })
+    requestParamsObj = { ...inputs }
+    if (Object.keys(requestParamsObj).length === 0) {
+      requestParamsObj = undefined
+    }
+    const data = await fetchHumanInputNodeStepRunForm(fetchURL, { inputs: requestParamsObj! })
     setFormData(data)
     return data
   }, [fetchURL])
@@ -82,8 +92,8 @@ const useSingleRunFormParams = ({
   }, [fetchURL])
 
   const handleShowGeneratedForm = async (formValue: Record<string, any>) => {
-    await handleFetchFormContent(formValue)
     setShowGeneratedForm(true)
+    await handleFetchFormContent(formValue)
   }
 
   const handleHideGeneratedForm = () => {
diff --git a/web/service/workflow.ts b/web/service/workflow.ts
index b11bc7bc74..c3bbb5254c 100644
--- a/web/service/workflow.ts
+++ b/web/service/workflow.ts
@@ -107,15 +107,15 @@ export const submitHumanInputForm = (token: string, data: {
 
 export const fetchHumanInputNodeStepRunForm = (
   url: string,
-  params: {
+  data: {
     inputs: Record<string, any>
   },
 ) => {
-  return get<{
+  return post<{
     form_content: string
     inputs: FormInputItem[]
     user_actions: UserAction[]
-  }>(url, { params })
+  }>(`${url}/preview`, { body: data })
 }
 
 export const submitHumanInputNodeStepRunForm = (
@@ -125,5 +125,5 @@ export const submitHumanInputNodeStepRunForm = (
     action: string
   },
 ) => {
-  return post<CommonResponse>(url, { body: data })
+  return post<CommonResponse>(`${url}/run`, { body: data })
 }