diff --git a/packages/uni-h5-vite/src/plugins/manifestJson.ts b/packages/uni-h5-vite/src/plugins/manifestJson.ts
index 0de19db5ad67bb43f3e52b70e6f8b71b315e7901..3f27399effc6373d0ab3b0f4b901c21f963e95db 100644
--- a/packages/uni-h5-vite/src/plugins/manifestJson.ts
+++ b/packages/uni-h5-vite/src/plugins/manifestJson.ts
@@ -44,6 +44,8 @@ export function uniManifestJsonPlugin(): Plugin {
         }
         if (!router.base) {
           router.base = '/'
+        } else {
+          router.base = new URL(router.base, 'http://localhost').pathname
         }
         const async = { ...defaultAsync, ...((h5 && h5.async) || {}) }