diff --git a/src/views/flow/vue-flow/adapter.js b/src/views/flow/vue-flow/adapter.js
index 68aaa69..c3c66e1 100644
--- a/src/views/flow/vue-flow/adapter.js
+++ b/src/views/flow/vue-flow/adapter.js
@@ -791,10 +791,21 @@ export const createFlowFacade = (store) => {
       const group = store.findNode(groupId);
       const child = store.findNode(childId);
       if (!group || !child || GROUP_TYPES.has(child.data.flowType)) return;
+      const previousParentId = child.parentNode || child.data?.properties?.parentId;
       const graph = facade.getGraphData();
       const groupData = graph.nodes.find((node) => node.id === groupId);
       const childData = graph.nodes.find((node) => node.id === childId);
       if (!groupData || !childData) return;
+
+      // 节点从循环体外进入循环体后，原连线的两端已处于不同执行作用域，必须全部断开。
+      // 在重新渲染父子结构前直接过滤图数据，可保证入边、出边和层级变更在同一次更新中完成。
+      const enteringLoop = group.data.flowType === "loop" && previousParentId !== groupId;
+      if (enteringLoop) {
+        graph.edges = graph.edges.filter((edge) => (
+          edge.sourceNodeId !== childId && edge.targetNodeId !== childId
+        ));
+      }
+
       groupData.children = Array.from(new Set([...(groupData.children || []), childId]));
       childData.properties = { ...(childData.properties || {}), parentId: groupId };
       if (dropCenter) {