diff --git a/lib/img.js b/lib/img.js
index 21a673a..271cb7e 100644
--- a/lib/img.js
+++ b/lib/img.js
@@ -17,8 +17,8 @@ function getImgUrl(ctx, baseClass, opt) {
     const root = ctx.rootContext || process.cwd();
     const subImgPath = baseClass.split(opt.prefix)[1].replace(/_/g, '/');
     const imgPath = path.join(opt.imgDir, subImgPath);
-    const absolutePath = path.join(root, imgPath)
-    const relativePath = path.relative(file, absolutePath).slice(1);
+    const absolutePath = path.join(root, imgPath).replace(/\\/g, '/');
+    const relativePath = path.relative(file, absolutePath).slice(1).replace(/\\/g, '/');
     const type = getImgType(imgPath, opt)
     return [type, imgPath + type, relativePath + type];
 }