diff --git a/internal/router/router.go b/internal/router/router.go
index 4a36f45..399dac4 100644
--- a/internal/router/router.go
+++ b/internal/router/router.go
@@ -229,6 +229,13 @@ func Setup(c *Controllers) *gin.Engine {
 		}
 	}
 
+	// 如果配置了前缀，添加重定向：/prefix -> /prefix/
+	if urlPrefix != "" {
+		root.GET("", func(ctx *gin.Context) {
+			ctx.Redirect(301, urlPrefix+"/")
+		})
+	}
+
 	// SPA fallback - serve index.html (no cache for HTML)
 	// 必须在最后注册，作为兜底路由
 	router.NoRoute(func(ctx *gin.Context) {