diff --git a/src/renderer/src/validation/flowValidation.ts b/src/renderer/src/validation/flowValidation.ts
index d2b89af..443b909 100644
--- a/src/renderer/src/validation/flowValidation.ts
+++ b/src/renderer/src/validation/flowValidation.ts
@@ -122,6 +122,20 @@ export function validateFlow(flow: FlowDefinition, catalog: Catalog): FlowValida
     ...(flow.variables ?? []).map((item) => item.name),
     ...flow.nodes.map((node) => node.options?.outputVar).filter(Boolean) as string[]
   ]);
+  // 循环容器在运行时向子节点注入迭代变量，静态校验时视为已定义
+  const LOOP_VARS: Record<string, string[]> = {
+    logic_control_array_for_v3: ["item", "index", "value"],
+    logic_control_dictionary_for_v1: ["item", "index", "value"],
+    logic_control_count_for: ["index"]
+  };
+  for (const node of flow.nodes) {
+    const vars = LOOP_VARS[node.componentId];
+    if (vars) {
+      const custom = String(node.values?.count_index ?? "").trim();
+      for (const name of vars) definedVars.add(name);
+      if (node.componentId === "logic_control_count_for" && /^[A-Za-z_]\w*$/.test(custom)) definedVars.add(custom);
+    }
+  }
   const variableRef = /\$\{\s*([A-Za-z_\u4e00-\u9fa5][\w\u4e00-\u9fa5]*)\s*(?:\.[A-Za-z_]\w*)?\s*\}/g;
   for (const node of flow.nodes) {
     const component = componentMap.get(node.componentId);