diff --git a/.changeset/light-wombats-buy.md b/.changeset/light-wombats-buy.md
new file mode 100644
index 0000000000..0d93a2ff2a
--- /dev/null
+++ b/.changeset/light-wombats-buy.md
@@ -0,0 +1,5 @@
+---
+"@lynx-js/react-webpack-plugin": patch
+---
+
+Keep snapshot id unchanged on Windows.
diff --git a/packages/webpack/react-webpack-plugin/src/loaders/options.ts b/packages/webpack/react-webpack-plugin/src/loaders/options.ts
index 89bf5b7810..352af105ab 100644
--- a/packages/webpack/react-webpack-plugin/src/loaders/options.ts
+++ b/packages/webpack/react-webpack-plugin/src/loaders/options.ts
@@ -80,10 +80,16 @@ export interface ReactLoaderOptions {
   transformPath?: string | undefined;
 }
 
+function normalizeSlashes(file: string) {
+  return file.replaceAll(path.win32.sep, '/');
+}
+
 function getCommonOptions(
   this: LoaderContext<ReactLoaderOptions>,
 ) {
-  const filename = path.relative(this.rootContext, this.resourcePath);
+  const filename = normalizeSlashes(
+    path.relative(this.rootContext, this.resourcePath),
+  );
 
   const {
     compat,