diff --git a/packages/router-core/src/qss.ts b/packages/router-core/src/qss.ts
index c66339c922..1afc1be1f9 100644
--- a/packages/router-core/src/qss.ts
+++ b/packages/router-core/src/qss.ts
@@ -30,6 +30,7 @@ function toValue(mix) {
   var str = decodeURIComponent(mix)
   if (str === 'false') return false
   if (str === 'true') return true
+  if (str.charAt(0) === '0') return str
   return +str * 0 === 0 ? +str : str
 }