diff --git a/packages/designer/src/project/project.ts b/packages/designer/src/project/project.ts
index 593498375..5a12b7e14 100644
--- a/packages/designer/src/project/project.ts
+++ b/packages/designer/src/project/project.ts
@@ -267,12 +267,20 @@ export class Project {
     // TODO: 多设备 simulator 支持
     this._simulator = simulator;
     this.designer.editor.set('simulator', simulator);
+    this.emitter.emit('lowcode_engine_simulator_ready', simulator);
   }
 
   setRendererReady(renderer: any) {
     this.emitter.emit('lowcode_engine_renderer_ready', renderer);
   }
 
+  onSimulatorReady(fn: (args: any) => void): () => void {
+    this.emitter.on('lowcode_engine_simulator_ready', fn);
+    return () => {
+      this.emitter.removeListener('lowcode_engine_simulator_ready', fn);
+    };
+  }
+
   onRendererReady(fn: (args: any) => void): () => void {
     this.emitter.on('lowcode_engine_renderer_ready', fn);
     return () => {