diff --git a/src/handler/proxyhandler.go b/src/handler/proxyhandler.go
index e690659de4b3afbe1a4c93edb063383d58a5b3d4..b27e12f243327a95f5347846c886615d7d065784 100644
--- a/src/handler/proxyhandler.go
+++ b/src/handler/proxyhandler.go
@@ -176,8 +176,10 @@ func Proxy(c *gin.Context) {
 								oldQ.Add(k, vv)
 							}
 						}
-					} else {
+					} else if len(v) == 1 {
 						oldQ.Set(k, v[0])
+					} else {
+						oldQ.Del(k)
 					}
 				}
 				reqURL.RawQuery = oldQ.Encode()