diff --git a/trunk/research/librtmp/srs_bandwidth_check.c b/trunk/research/librtmp/srs_bandwidth_check.c
index 94a02cd6b..016fea7c0 100644
--- a/trunk/research/librtmp/srs_bandwidth_check.c
+++ b/trunk/research/librtmp/srs_bandwidth_check.c
@@ -69,11 +69,6 @@ int do_check(srs_rtmp_t rtmp)
         srs_human_trace("Retrieve server version failed, ret=%d", ret);
         return ret;
     }
-
-    if ((ret = srs_rtmp_play_stream(rtmp)) != 0) {
-        srs_human_trace("Play rtmp stream failed. ret=%d", ret);
-        return ret;
-    }
     
     if ((ret = srs_rtmp_bandwidth_check(rtmp,
         &start_time, &end_time, &play_kbps, &publish_kbps,