diff --git a/web/apps/web/src/components/app/node-form/widgets/variable-select/use-select-options.tsx b/web/apps/web/src/components/app/node-form/widgets/variable-select/use-select-options.tsx
index 9c30f82a..27a6e748 100644
--- a/web/apps/web/src/components/app/node-form/widgets/variable-select/use-select-options.tsx
+++ b/web/apps/web/src/components/app/node-form/widgets/variable-select/use-select-options.tsx
@@ -32,56 +32,60 @@ export const useSelectOptions = (name?: string) => {
 
   const globalGroup = [...context, ...states];
 
-  const options = useMemo(() => {
-    const formatOptions = (items: any[]): CascaderOption[] => {
-      return items.reduce((memo, item) => {
-        const current = { ...item };
-        if (
-          parent?.startsWith('input.') &&
-          ['Input', 'Tasks', 'Output'].includes(current.label)
-        ) {
+  const formatOptions = (items: any[]): CascaderOption[] => {
+    return items.reduce((memo, item) => {
+      const current = { ...item };
+      if (
+        parent?.startsWith('input.') &&
+        ['Input', 'Output', 'Task'].includes(current.label)
+      ) {
+        return memo;
+      }
+      if (parent?.startsWith('blocks.')) {
+        if (['Output'].includes(current.label)) {
           return memo;
         }
-        if (parent?.startsWith('blocks.')) {
-          if (['Output'].includes(current.label)) {
-            return memo;
+        if (['Task'].includes(current.label)) {
+          const match = parent.match(/(\d+)$/);
+          if (match?.[1]) {
+            const parentIndex = Number(match[1]);
+            // 只展示索引小于当前任务索引的任务
+            current.children = (current.children as CascaderOption[])?.filter(
+              (_, index) => index < parentIndex,
+            );
           }
-          if (['Tasks'].includes(current.label)) {
-            const match = parent.match(/(\d+)$/);
-            if (match?.[1]) {
-              current.children = current.children?.splice(0, Number(match[1]));
-            }
-            if (isEmpty(current.children)) {
-              return memo;
-            }
+          if (isEmpty(current.children)) {
+            return memo;
           }
-        } else if (
-          name?.startsWith('output.') &&
-          ['Output'].includes(current.label)
-        ) {
-          return memo;
-        } else if (
-          name?.startsWith('context.') &&
-          ['Start-Context'].includes(current.label)
-        ) {
-          return memo;
         }
-        memo.push({
-          label: current.label,
-          value: `{{${current.value}}}`,
-          children: current.children?.map((child: any) => ({
-            label: child.label,
-            value: `{{${child.value}}}`,
-            children: child.children?.map((grandchild: any) => ({
-              label: grandchild.label,
-              value: `{{${grandchild.value}}}`,
-            })),
-          })),
-        });
+      } else if (
+        name?.startsWith('output.') &&
+        ['Output'].includes(current.label)
+      ) {
+        return memo;
+      } else if (
+        name?.startsWith('context.') &&
+        ['Start-Context'].includes(current.label)
+      ) {
         return memo;
-      }, [] as CascaderOption[]);
-    };
+      }
+      memo.push({
+        label: current.label,
+        value: `{{${current.value}}}`,
+        children: current.children?.map((child: any) => ({
+          label: child.label,
+          value: `{{${child.value}}}`,
+          children: child.children?.map((grandchild: any) => ({
+            label: grandchild.label,
+            value: `{{${grandchild.value}}}`,
+          })),
+        })),
+      });
+      return memo;
+    }, [] as CascaderOption[]);
+  };
 
+  const options = useMemo(() => {
     return [
       { label: 'current', children: formatOptions(currentGroup) },
       { label: 'global', children: formatOptions(globalGroup) },