diff --git a/web/app/components/app/configuration/config-var/config-modal/index.tsx b/web/app/components/app/configuration/config-var/config-modal/index.tsx
index 861020545d..4ba451452c 100644
--- a/web/app/components/app/configuration/config-var/config-modal/index.tsx
+++ b/web/app/components/app/configuration/config-var/config-modal/index.tsx
@@ -21,6 +21,10 @@ import Checkbox from '@/app/components/base/checkbox'
 import { DEFAULT_FILE_UPLOAD_SETTING } from '@/app/components/workflow/constants'
 import { DEFAULT_VALUE_MAX_LEN } from '@/config'
 import { SimpleSelect } from '@/app/components/base/select'
+import Textarea from '@/app/components/base/textarea'
+import { FileUploaderInAttachmentWrapper } from '@/app/components/base/file-uploader'
+import { TransferMethod } from '@/types/app'
+import type { FileEntity } from '@/app/components/base/file-uploader/types'
 
 const TEXT_MAX_LENGTH = 256
 
@@ -82,6 +86,8 @@ const ConfigModal: FC<IConfigModalProps> = ({
     return () => {
       const newPayload = produce(tempPayload, (draft) => {
         draft.type = type
+        // Clear default value when switching types
+        draft.default = undefined
         if ([InputVarType.singleFile, InputVarType.multiFiles].includes(type)) {
           (Object.keys(DEFAULT_FILE_UPLOAD_SETTING)).forEach((key) => {
             if (key !== 'max_length')
@@ -234,6 +240,41 @@ const ConfigModal: FC<IConfigModalProps> = ({
             </Field>
 
           )}
+
+          {/* Default value for text input */}
+          {type === InputVarType.textInput && (
+            <Field title={t('appDebug.variableConfig.defaultValue')}>
+              <Input
+                value={tempPayload.default || ''}
+                onChange={e => handlePayloadChange('default')(e.target.value || undefined)}
+                placeholder={t('appDebug.variableConfig.inputPlaceholder')!}
+              />
+            </Field>
+          )}
+
+          {/* Default value for paragraph */}
+          {type === InputVarType.paragraph && (
+            <Field title={t('appDebug.variableConfig.defaultValue')}>
+              <Textarea
+                value={tempPayload.default || ''}
+                onChange={e => handlePayloadChange('default')(e.target.value || undefined)}
+                placeholder={t('appDebug.variableConfig.inputPlaceholder')!}
+              />
+            </Field>
+          )}
+
+          {/* Default value for number input */}
+          {type === InputVarType.number && (
+            <Field title={t('appDebug.variableConfig.defaultValue')}>
+              <Input
+                type="number"
+                value={tempPayload.default || ''}
+                onChange={e => handlePayloadChange('default')(e.target.value || undefined)}
+                placeholder={t('appDebug.variableConfig.inputPlaceholder')!}
+              />
+            </Field>
+          )}
+
           {type === InputVarType.select && (
             <>
               <Field title={t('appDebug.variableConfig.options')}>
@@ -263,11 +304,30 @@ const ConfigModal: FC<IConfigModalProps> = ({
           )}
 
           {[InputVarType.singleFile, InputVarType.multiFiles].includes(type) && (
-            <FileUploadSetting
-              payload={tempPayload as UploadFileSetting}
-              onChange={(p: UploadFileSetting) => setTempPayload(p as InputVar)}
-              isMultiple={type === InputVarType.multiFiles}
-            />
+            <>
+              <FileUploadSetting
+                payload={tempPayload as UploadFileSetting}
+                onChange={(p: UploadFileSetting) => setTempPayload(p as InputVar)}
+                isMultiple={type === InputVarType.multiFiles}
+              />
+              <Field title={t('appDebug.variableConfig.defaultValue')}>
+                <FileUploaderInAttachmentWrapper
+                  value={(type === InputVarType.singleFile ? (tempPayload.default ? [tempPayload.default] : []) : (tempPayload.default || [])) as unknown as FileEntity[]}
+                  onChange={(files) => {
+                    if (type === InputVarType.singleFile)
+                      handlePayloadChange('default')(files?.[0] || undefined)
+                    else
+                      handlePayloadChange('default')(files || undefined)
+                  }}
+                  fileConfig={{
+                    allowed_file_types: tempPayload.allowed_file_types || [SupportUploadFileTypes.document],
+                    allowed_file_extensions: tempPayload.allowed_file_extensions || [],
+                    allowed_file_upload_methods: tempPayload.allowed_file_upload_methods || [TransferMethod.remote_url],
+                    number_limits: type === InputVarType.singleFile ? 1 : tempPayload.max_length || 5,
+                  }}
+                />
+              </Field>
+            </>
           )}
 
           <div className='!mt-5 flex h-6 items-center space-x-2'>
diff --git a/web/app/components/base/chat/chat-with-history/hooks.tsx b/web/app/components/base/chat/chat-with-history/hooks.tsx
index 0f437c82b7..5a2919fe51 100644
--- a/web/app/components/base/chat/chat-with-history/hooks.tsx
+++ b/web/app/components/base/chat/chat-with-history/hooks.tsx
@@ -210,7 +210,7 @@ export const useChatWithHistory = (installedAppInfo?: InstalledApp) => {
 
         return {
           ...item.paragraph,
-          default: value || item.default,
+          default: value || item.default || item.paragraph.default,
           type: 'paragraph',
         }
       }
@@ -218,7 +218,7 @@ export const useChatWithHistory = (installedAppInfo?: InstalledApp) => {
         const convertedNumber = Number(initInputs[item.number.variable]) ?? undefined
         return {
           ...item.number,
-          default: convertedNumber || item.default,
+          default: convertedNumber || item.default || item.number.default,
           type: 'number',
         }
       }
@@ -251,7 +251,7 @@ export const useChatWithHistory = (installedAppInfo?: InstalledApp) => {
 
       return {
         ...item['text-input'],
-        default: value || item.default,
+        default: value || item.default || item['text-input'].default,
         type: 'text-input',
       }
     })
diff --git a/web/app/components/base/chat/embedded-chatbot/hooks.tsx b/web/app/components/base/chat/embedded-chatbot/hooks.tsx
index d7983dc599..3281f05f7e 100644
--- a/web/app/components/base/chat/embedded-chatbot/hooks.tsx
+++ b/web/app/components/base/chat/embedded-chatbot/hooks.tsx
@@ -183,7 +183,7 @@ export const useEmbeddedChatbot = () => {
 
         return {
           ...item.paragraph,
-          default: value || item.default,
+          default: value || item.default || item.paragraph.default,
           type: 'paragraph',
         }
       }
@@ -191,7 +191,7 @@ export const useEmbeddedChatbot = () => {
         const convertedNumber = Number(initInputs[item.number.variable]) ?? undefined
         return {
           ...item.number,
-          default: convertedNumber || item.default,
+          default: convertedNumber || item.default || item.number.default,
           type: 'number',
         }
       }
@@ -224,7 +224,7 @@ export const useEmbeddedChatbot = () => {
 
       return {
         ...item['text-input'],
-        default: value || item.default,
+        default: value || item.default || item['text-input'].default,
         type: 'text-input',
       }
     })
diff --git a/web/app/components/share/text-generation/run-once/index.tsx b/web/app/components/share/text-generation/run-once/index.tsx
index cfafe73bf2..7622daa867 100644
--- a/web/app/components/share/text-generation/run-once/index.tsx
+++ b/web/app/components/share/text-generation/run-once/index.tsx
@@ -1,5 +1,5 @@
 import type { ChangeEvent, FC, FormEvent } from 'react'
-import { useEffect } from 'react'
+import { useEffect, useState } from 'react'
 import React, { useCallback } from 'react'
 import { useTranslation } from 'react-i18next'
 import {
@@ -41,6 +41,7 @@ const RunOnce: FC<IRunOnceProps> = ({
   const { t } = useTranslation()
   const media = useBreakpoints()
   const isPC = media === MediaType.pc
+  const [isInitialized, setIsInitialized] = useState(false)
 
   const onClear = () => {
     const newInputs: Record<string, any> = {}
@@ -64,16 +65,24 @@ const RunOnce: FC<IRunOnceProps> = ({
   }, [onInputsChange, inputsRef])
 
   useEffect(() => {
+    if (isInitialized) return
     const newInputs: Record<string, any> = {}
     promptConfig.prompt_variables.forEach((item) => {
       if (item.type === 'select')
         newInputs[item.key] = item.default
       else if (item.type === 'string' || item.type === 'paragraph')
-        newInputs[item.key] = ''
+        newInputs[item.key] = item.default || ''
+      else if (item.type === 'number')
+        newInputs[item.key] = item.default
+      else if (item.type === 'file')
+        newInputs[item.key] = item.default
+      else if (item.type === 'file-list')
+        newInputs[item.key] = item.default || []
       else
         newInputs[item.key] = undefined
     })
     onInputsChange(newInputs)
+    setIsInitialized(true)
   }, [promptConfig.prompt_variables, onInputsChange])
 
   return (
@@ -81,7 +90,7 @@ const RunOnce: FC<IRunOnceProps> = ({
       <section>
         {/* input form */}
         <form onSubmit={onSubmit}>
-          {(inputs === null || inputs === undefined || Object.keys(inputs).length === 0) ? null
+          {(inputs === null || inputs === undefined || Object.keys(inputs).length === 0) || !isInitialized ? null
             : promptConfig.prompt_variables.map(item => (
               <div className='mt-4 w-full' key={item.key}>
                 <label className='system-md-semibold flex h-6 items-center text-text-secondary'>{item.name}</label>
@@ -122,6 +131,7 @@ const RunOnce: FC<IRunOnceProps> = ({
                   )}
                   {item.type === 'file' && (
                     <FileUploaderInAttachmentWrapper
+                      value={inputs[item.key] ? [inputs[item.key]] : []}
                       onChange={(files) => { handleInputsChange({ ...inputsRef.current, [item.key]: getProcessedFiles(files)[0] }) }}
                       fileConfig={{
                         ...item.config,
@@ -131,6 +141,7 @@ const RunOnce: FC<IRunOnceProps> = ({
                   )}
                   {item.type === 'file-list' && (
                     <FileUploaderInAttachmentWrapper
+                      value={inputs[item.key]}
                       onChange={(files) => { handleInputsChange({ ...inputsRef.current, [item.key]: getProcessedFiles(files) }) }}
                       fileConfig={{
                         ...item.config,
diff --git a/web/app/components/workflow/panel/inputs-panel.tsx b/web/app/components/workflow/panel/inputs-panel.tsx
index 64ac6d8686..c631fa2b67 100644
--- a/web/app/components/workflow/panel/inputs-panel.tsx
+++ b/web/app/components/workflow/panel/inputs-panel.tsx
@@ -1,7 +1,6 @@
 import {
   memo,
   useCallback,
-  useEffect,
   useMemo,
 } from 'react'
 import { useTranslation } from 'react-i18next'
@@ -33,7 +32,7 @@ type Props = {
 const InputsPanel = ({ onRun }: Props) => {
   const { t } = useTranslation()
   const workflowStore = useWorkflowStore()
-  const { inputs, setInputs } = useStore(s => ({
+  const { inputs } = useStore(s => ({
     inputs: s.inputs,
     setInputs: s.setInputs,
   }))
@@ -48,23 +47,13 @@ const InputsPanel = ({ onRun }: Props) => {
   const startVariables = startNode?.data.variables
   const { checkInputsForm } = useCheckInputsForms()
 
-  const initialInputs = useMemo(() => {
-    const initInputs: Record<string, any> = {}
-    if (startVariables) {
-      startVariables.forEach((variable) => {
-        if (variable.default)
-          initInputs[variable.variable] = variable.default
-      })
-    }
-    return initInputs
-  }, [startVariables])
-
-  useEffect(() => {
-    setInputs({
-      ...initialInputs,
-      ...inputs,
+  const initialInputs = { ...inputs }
+  if (startVariables) {
+    startVariables.forEach((variable) => {
+      if (variable.default)
+       initialInputs[variable.variable] = variable.default
     })
-  }, [initialInputs])
+  }
 
   const variables = useMemo(() => {
     const data = startVariables || []
@@ -102,11 +91,11 @@ const InputsPanel = ({ onRun }: Props) => {
   }
 
   const doRun = useCallback(() => {
-    if (!checkInputsForm(inputs, variables as any))
+    if (!checkInputsForm(initialInputs, variables as any))
       return
     onRun()
-    handleRun({ inputs: getProcessedInputs(inputs, variables as any), files })
-  }, [files, handleRun, inputs, onRun, variables, checkInputsForm])
+    handleRun({ inputs: getProcessedInputs(initialInputs, variables as any), files })
+  }, [files, handleRun, initialInputs, onRun, variables, checkInputsForm])
 
   const canRun = useMemo(() => {
     if (files?.some(item => (item.transfer_method as any) === TransferMethod.local_file && !item.upload_file_id))
@@ -128,7 +117,7 @@ const InputsPanel = ({ onRun }: Props) => {
                 autoFocus={index === 0}
                 className='!block'
                 payload={variable}
-                value={inputs[variable.variable]}
+                value={initialInputs[variable.variable]}
                 onChange={v => handleValueChange(variable.variable, v)}
               />
             </div>
diff --git a/web/utils/model-config.ts b/web/utils/model-config.ts
index 3a500f22bc..de101987d8 100644
--- a/web/utils/model-config.ts
+++ b/web/utils/model-config.ts
@@ -41,6 +41,7 @@ export const userInputsFormToPromptVariables = (useInputs: UserInputFormItem[] |
         options: [],
         is_context_var,
         hide: content.hide,
+        default: content.default,
       })
     }
     else if (type === 'number') {
@@ -51,6 +52,7 @@ export const userInputsFormToPromptVariables = (useInputs: UserInputFormItem[] |
         type,
         options: [],
         hide: content.hide,
+        default: content.default,
       })
     }
     else if (type === 'select') {
@@ -78,6 +80,7 @@ export const userInputsFormToPromptVariables = (useInputs: UserInputFormItem[] |
           number_limits: 1,
         },
         hide: content.hide,
+        default: content.default,
       })
     }
     else if (type === 'file-list') {
@@ -93,6 +96,7 @@ export const userInputsFormToPromptVariables = (useInputs: UserInputFormItem[] |
           number_limits: content.max_length,
         },
         hide: content.hide,
+        default: content.default,
       })
     }
     else {