diff --git a/packages/rax-simulator-renderer/src/renderer.ts b/packages/rax-simulator-renderer/src/renderer.ts
index 7a8e85e5a..80088ea2a 100644
--- a/packages/rax-simulator-renderer/src/renderer.ts
+++ b/packages/rax-simulator-renderer/src/renderer.ts
@@ -73,7 +73,10 @@ function cacheReactKey(el: Element): Element {
   if (REACT_KEY !== '') {
     return el;
   }
-  REACT_KEY = Object.keys(el).find((key) => key.startsWith('__reactInternalInstance$')) || '';
+  // react17 采用 __reactFiber 开头
+  REACT_KEY = Object.keys(el).find(
+    (key) => key.startsWith('__reactInternalInstance$') || key.startsWith('__reactFiber$'),
+  ) || '';
   if (!REACT_KEY && (el as HTMLElement).parentElement) {
     return cacheReactKey((el as HTMLElement).parentElement!);
   }
diff --git a/packages/react-simulator-renderer/src/renderer.ts b/packages/react-simulator-renderer/src/renderer.ts
index 45ce896f7..2d493067c 100644
--- a/packages/react-simulator-renderer/src/renderer.ts
+++ b/packages/react-simulator-renderer/src/renderer.ts
@@ -530,7 +530,10 @@ function cacheReactKey(el: Element): Element {
   if (REACT_KEY !== '') {
     return el;
   }
-  REACT_KEY = Object.keys(el).find((key) => key.startsWith('__reactInternalInstance$')) || '';
+  // react17 采用 __reactFiber 开头
+  REACT_KEY = Object.keys(el).find(
+    (key) => key.startsWith('__reactInternalInstance$') || key.startsWith('__reactFiber$'),
+  ) || '';
   if (!REACT_KEY && (el as HTMLElement).parentElement) {
     return cacheReactKey((el as HTMLElement).parentElement!);
   }