diff --git a/internal/proxy/database_interceptor.go b/internal/proxy/database_interceptor.go
index 5373cf65c9..6adb0bcd40 100644
--- a/internal/proxy/database_interceptor.go
+++ b/internal/proxy/database_interceptor.go
@@ -28,6 +28,11 @@ func fillDatabase(ctx context.Context, req interface{}) (context.Context, interf
 			r.DbName = GetCurDBNameFromContextOrDefault(ctx)
 		}
 		return ctx, r
+	case *milvuspb.TruncateCollectionRequest:
+		if r.DbName == "" {
+			r.DbName = GetCurDBNameFromContextOrDefault(ctx)
+		}
+		return ctx, r
 	case *milvuspb.HasCollectionRequest:
 		if r.DbName == "" {
 			r.DbName = GetCurDBNameFromContextOrDefault(ctx)
diff --git a/internal/proxy/database_interceptor_test.go b/internal/proxy/database_interceptor_test.go
index 598a7b7c48..26e64a45e1 100644
--- a/internal/proxy/database_interceptor_test.go
+++ b/internal/proxy/database_interceptor_test.go
@@ -49,6 +49,7 @@ func TestDatabaseInterceptor(t *testing.T) {
 		availableReqs := []proto.Message{
 			&milvuspb.CreateCollectionRequest{},
 			&milvuspb.DropCollectionRequest{},
+			&milvuspb.TruncateCollectionRequest{},
 			&milvuspb.HasCollectionRequest{},
 			&milvuspb.LoadCollectionRequest{},
 			&milvuspb.ReleaseCollectionRequest{},