diff --git a/packages/designer/src/document/document-model.ts b/packages/designer/src/document/document-model.ts
index 239560c35..544857bc9 100644
--- a/packages/designer/src/document/document-model.ts
+++ b/packages/designer/src/document/document-model.ts
@@ -20,14 +20,14 @@ export type GetDataType<T, NodeType> = T extends undefined
     : any
   : T;
 
-  export interface ComponentMap {
-    componentName: string;
-    package: string;
-    version?: string;
-    destructuring?: boolean;
-    exportName?: string;
-    subName?: string;
-  }
+export interface ComponentMap {
+  componentName: string;
+  package: string;
+  version?: string;
+  destructuring?: boolean;
+  exportName?: string;
+  subName?: string;
+}
 
 export class DocumentModel {
   /**
@@ -148,7 +148,12 @@ export class DocumentModel {
    * 生成唯一id
    */
   nextId() {
-    return (this.id.slice(-10) + (++this.seqId).toString(36)).toLocaleLowerCase();
+    let id;
+    do {
+      id = 'node_' + (this.id.slice(-10) + (++this.seqId).toString(36)).toLocaleLowerCase();
+    } while (this.nodesMap.get(id))
+
+    return id;
   }
 
   /**
diff --git a/packages/designer/src/document/node/node.ts b/packages/designer/src/document/node/node.ts
index 4aaca47ef..384b445e3 100644
--- a/packages/designer/src/document/node/node.ts
+++ b/packages/designer/src/document/node/node.ts
@@ -148,7 +148,7 @@ export class Node<Schema extends NodeSchema = NodeSchema> {
 
   constructor(readonly document: DocumentModel, nodeSchema: Schema) {
     const { componentName, id, children, props, ...extras } = nodeSchema;
-    this.id = id || `node_${document.nextId()}`;
+    this.id = id || document.nextId();
     this.componentName = componentName;
     if (this.componentName === 'Leaf') {
       this.props = new Props(this, {