diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source-options/option-card.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source-options/option-card.tsx
index 7853805631..a3ea97ac42 100644
--- a/web/app/components/datasets/documents/create-from-pipeline/data-source-options/option-card.tsx
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source-options/option-card.tsx
@@ -33,7 +33,7 @@ const OptionCard = ({
         <DatasourceIcon iconUrl={iconUrl} />
       </div>
       <div
-        className={cn('system-sm-medium line-clamp-2 grow text-text-secondary', selected && 'text-primary')}
+        className={cn('system-sm-medium line-clamp-2 grow text-text-secondary', selected && 'text-text-primary')}
         title={label}
       >
         {label}
diff --git a/web/app/components/rag-pipeline/components/panel/test-run/preparation/data-source-options/option-card.tsx b/web/app/components/rag-pipeline/components/panel/test-run/preparation/data-source-options/option-card.tsx
index 83a0f53770..8908c90cb6 100644
--- a/web/app/components/rag-pipeline/components/panel/test-run/preparation/data-source-options/option-card.tsx
+++ b/web/app/components/rag-pipeline/components/panel/test-run/preparation/data-source-options/option-card.tsx
@@ -43,7 +43,7 @@ const OptionCard = ({
         />
       </div>
       <div
-        className={cn('system-sm-medium line-clamp-2 grow text-text-secondary', selected && 'text-primary')}
+        className={cn('system-sm-medium line-clamp-2 grow text-text-secondary', selected && 'text-text-primary')}
         title={label}
       >
         {label}
diff --git a/web/app/components/workflow/nodes/_base/components/variable/object-child-tree-panel/show/field.tsx b/web/app/components/workflow/nodes/_base/components/variable/object-child-tree-panel/show/field.tsx
index 63b4880851..f95c2353f3 100644
--- a/web/app/components/workflow/nodes/_base/components/variable/object-child-tree-panel/show/field.tsx
+++ b/web/app/components/workflow/nodes/_base/components/variable/object-child-tree-panel/show/field.tsx
@@ -44,7 +44,7 @@ const Field: FC<Props> = ({
               />
             )}
             <div className={cn('system-sm-medium ml-[7px] h-6 truncate leading-6 text-text-secondary', isRoot && rootClassName)}>{name}</div>
-            <div className='system-xs-regular ml-3 shrink-0 leading-6 text-text-tertiary'>{getFieldType(payload)}</div>
+            <div className='system-xs-regular ml-3 shrink-0 leading-6 text-text-tertiary'>{getFieldType(payload)}{payload.schemaType && ` (${payload.schemaType})`}</div>
             {required && <div className='system-2xs-medium-uppercase ml-3 leading-6 text-text-warning'>{t('app.structOutput.required')}</div>}
           </div>
           {payload.description && (
diff --git a/web/app/components/workflow/nodes/_base/components/variable/use-match-schema-type.ts b/web/app/components/workflow/nodes/_base/components/variable/use-match-schema-type.ts
index 8c6a47a735..6d29a77e57 100644
--- a/web/app/components/workflow/nodes/_base/components/variable/use-match-schema-type.ts
+++ b/web/app/components/workflow/nodes/_base/components/variable/use-match-schema-type.ts
@@ -1,3 +1,5 @@
+import { useSchemaTypeDefinitions } from '@/service/use-common'
+
 type AnyObj = Record<string, any> | null
 
 // only compare type in object
@@ -29,3 +31,17 @@ export function deepEqualByType(a: AnyObj, b: AnyObj): boolean {
 
   return cmp(a, b)
 }
+
+const useMatchSchemaType = () => {
+  const { data: schemaTypeDefinitions } = useSchemaTypeDefinitions()
+  const getMatchedSchemaType = (obj: AnyObj): string => {
+    if(!schemaTypeDefinitions) return ''
+    const matched = schemaTypeDefinitions.find(def => deepEqualByType(obj, def.schema))
+    return matched ? matched.name : ''
+  }
+  return {
+    getMatchedSchemaType,
+  }
+}
+
+export default useMatchSchemaType
diff --git a/web/app/components/workflow/nodes/llm/types.ts b/web/app/components/workflow/nodes/llm/types.ts
index ff2a5fc5f4..f68edf4040 100644
--- a/web/app/components/workflow/nodes/llm/types.ts
+++ b/web/app/components/workflow/nodes/llm/types.ts
@@ -55,7 +55,7 @@ export type Field = {
   items?: ArrayItems // Array has items. Define the item type
   enum?: SchemaEnumType // Enum values
   additionalProperties?: false // Required in object by api. Just set false
-  alias?: string // Alias of the field
+  schemaType?: string // an another type defined in backend schemas
 }
 
 export type StructuredOutput = {
diff --git a/web/app/components/workflow/nodes/llm/utils.ts b/web/app/components/workflow/nodes/llm/utils.ts
index af9eef5d23..5933def441 100644
--- a/web/app/components/workflow/nodes/llm/utils.ts
+++ b/web/app/components/workflow/nodes/llm/utils.ts
@@ -10,14 +10,11 @@ export const checkNodeValid = (_payload: LLMNodeType) => {
 }
 
 export const getFieldType = (field: Field) => {
-  const { type, items, alias } = field
-  if (type !== Type.array || !items) {
-    if (alias)
-      return alias
+  const { type, items } = field
+  if (type !== Type.array || !items)
     return type
-  }
 
-  return ArrayType[items.type]
+  return ArrayType[items.type as keyof typeof ArrayType]
 }
 
 export const getHasChildren = (schema: Field) => {
diff --git a/web/app/components/workflow/nodes/tool/panel.tsx b/web/app/components/workflow/nodes/tool/panel.tsx
index 5ab894c0d1..c914e2fc61 100644
--- a/web/app/components/workflow/nodes/tool/panel.tsx
+++ b/web/app/components/workflow/nodes/tool/panel.tsx
@@ -13,6 +13,7 @@ import StructureOutputItem from '@/app/components/workflow/nodes/_base/component
 import { useStore } from '@/app/components/workflow/store'
 import { wrapStructuredVarItem } from '@/app/components/workflow/utils/tool'
 import { useInitial } from './use-initial'
+import useMatchSchemaType from '../_base/components/variable/use-match-schema-type'
 
 const i18nPrefix = 'workflow.nodes.tool'
 
@@ -41,6 +42,7 @@ const Panel: FC<NodePanelProps<ToolNodeType>> = ({
   const [collapsed, setCollapsed] = React.useState(false)
   const pipelineId = useStore(s => s.pipelineId)
   const setShowInputFieldPanel = useStore(s => s.setShowInputFieldPanel)
+  const { getMatchedSchemaType } = useMatchSchemaType()
 
   if (isLoading) {
     return <div className='flex h-[200px] items-center justify-center'>
@@ -122,7 +124,7 @@ const Panel: FC<NodePanelProps<ToolNodeType>> = ({
                 {outputItem.value?.type === 'object' ? (
                   <StructureOutputItem
                     rootClassName='code-sm-semibold text-text-secondary'
-                    payload={wrapStructuredVarItem(outputItem)} />
+                    payload={wrapStructuredVarItem(outputItem, getMatchedSchemaType(outputItem.value))} />
                 ) : (
                   <VarItem
                     name={outputItem.name}
diff --git a/web/app/components/workflow/utils/tool.ts b/web/app/components/workflow/utils/tool.ts
index d37ed43da5..ca92c5079d 100644
--- a/web/app/components/workflow/utils/tool.ts
+++ b/web/app/components/workflow/utils/tool.ts
@@ -50,6 +50,7 @@ export const CHUNK_TYPE_MAP = {
   qa_chunks: 'QAStructureChunk',
 }
 
+// deprecated, use schemaType in llm/types.ts instead
 export const getOutputVariableAlias = (variable: Record<string, any>) => {
   if (variable?.general_chunks)
     return CHUNK_TYPE_MAP.general_chunks
@@ -60,16 +61,16 @@ export const getOutputVariableAlias = (variable: Record<string, any>) => {
   if (variable?.file_type)
     return 'file'
 }
-export const wrapStructuredVarItem = (outputItem: any): StructuredOutput => {
+
+export const wrapStructuredVarItem = (outputItem: any, matchedSchemaType: string): StructuredOutput => {
   const dataType = Type.object
-  // console.log(outputItem)
   return {
     schema: {
       type: dataType,
       properties: {
         [outputItem.name]: {
           ...outputItem.value,
-          alias: getOutputVariableAlias(outputItem.value?.properties),
+          schemaType: matchedSchemaType,
         },
       },
       additionalProperties: false,
diff --git a/web/service/use-common.ts b/web/service/use-common.ts
index ae9300ef57..8fdd0b6c77 100644
--- a/web/service/use-common.ts
+++ b/web/service/use-common.ts
@@ -60,3 +60,17 @@ export const useFilePreview = (fileID: string) => {
     enabled: !!fileID,
   })
 }
+
+type SchemaTypeDefinition = {
+  name: string
+  schema: {
+    properties: Record<string, any>
+  }
+}
+
+export const useSchemaTypeDefinitions = () => {
+  return useQuery<SchemaTypeDefinition[]>({
+    queryKey: [NAME_SPACE, 'schema-type-definitions'],
+    queryFn: () => get<SchemaTypeDefinition[]>('/spec/schema-definitions'),
+  })
+}