diff --git a/scripts/generate-cssinjs.ts b/scripts/generate-cssinjs.ts
index 62341d1a76..e16412607d 100644
--- a/scripts/generate-cssinjs.ts
+++ b/scripts/generate-cssinjs.ts
@@ -25,7 +25,7 @@ export const generateCssinjs = ({ key, beforeRender, render }: GenCssinjsOptions
   Promise.all(
     styleFiles.map(async (file) => {
       const absPath = url.pathToFileURL(file).href;
-      const pathArr = file.split('/');
+      const pathArr = file.split(path.sep);
       const styleIndex = pathArr.lastIndexOf('style');
       const componentName = pathArr[styleIndex - 1];
       let useStyle: StyleFn = () => {};