diff --git a/pixiu/pkg/filter/http/loadbalancer/loadbalancer.go b/pixiu/pkg/filter/http/loadbalancer/loadbalancer.go
index c8dc99753..776897443 100644
--- a/pixiu/pkg/filter/http/loadbalancer/loadbalancer.go
+++ b/pixiu/pkg/filter/http/loadbalancer/loadbalancer.go
@@ -77,6 +77,6 @@ func (factory *FilterFactory) PrepareFilterChain(ctx *contexthttp.HttpContext, c
 func (f *Filter) Decode(c *contexthttp.HttpContext) filter.FilterStatus {
 	allInstances := strings.Split(c.GetAPI().IntegrationRequest.HTTPBackendConfig.URL, ",")
 	idx := rand.Int31n(int32(len(allInstances)))
-	c.Api.IntegrationRequest.HTTPBackendConfig.URL = allInstances[idx]
+	c.Api.IntegrationRequest.HTTPBackendConfig.URL = strings.TrimSpace(allInstances[idx])
 	return filter.Continue
 }