diff --git a/apm-network/src/main/proto/TraceSegment.proto b/apm-network/src/main/proto/TraceSegment.proto
index 71fcd54f8..cdb3acc6d 100644
--- a/apm-network/src/main/proto/TraceSegment.proto
+++ b/apm-network/src/main/proto/TraceSegment.proto
@@ -6,7 +6,7 @@ option java_package = "org.skywalking.apm.network.trace.proto";
 import "Downstream.proto";
 
 service TraceSegmentService {
-    rpc collect (TraceSegmentObject) returns (Downstream) {
+    rpc collect (stream TraceSegmentObject) returns (Downstream) {
     }
 }