diff --git a/README.md b/README.md
index 120af1dc7..09c82fa20 100755
--- a/README.md
+++ b/README.md
@@ -145,6 +145,7 @@ For previous versions, please read:
 
 ## V3 changes
 
+* v3.0, 2019-12-18, Fix [#1520][bug #1520] and [#1223][bug #1223], bug for origin cluster 3+ servers. 3.0.74
 * v3.0, 2019-12-18, For [#1042][bug #1042], add test for RAW AVC protocol.
 * v3.0, 2019-12-18, Detect whether flash enabled for srs-player. 3.0.73
 * v3.0, 2019-12-17, Fix HTTP CORS bug when sending response for OPTIONS. 3.0.72
@@ -1532,6 +1533,8 @@ Winlin
 [bug #1042]: https://github.com/ossrs/srs/issues/1042
 [bug #1445]: https://github.com/ossrs/srs/issues/1445
 [bug #1506]: https://github.com/ossrs/srs/issues/1506
+[bug #1520]: https://github.com/ossrs/srs/issues/1520
+[bug #1223]: https://github.com/ossrs/srs/issues/1223
 [bug #xxxxxxxxxxxxx]: https://github.com/ossrs/srs/issues/xxxxxxxxxxxxx
 
 [exo #828]: https://github.com/google/ExoPlayer/pull/828
diff --git a/trunk/conf/origin.cluster.serverA.conf b/trunk/conf/origin.cluster.serverA.conf
index 0e0d5701e..c9b0efa06 100644
--- a/trunk/conf/origin.cluster.serverA.conf
+++ b/trunk/conf/origin.cluster.serverA.conf
@@ -15,6 +15,6 @@ vhost __defaultVhost__ {
     cluster {
         mode            local;
         origin_cluster  on;
-        coworkers       127.0.0.1:9091;
+        coworkers       127.0.0.1:9091 127.0.0.1:9092;
     }
 }
diff --git a/trunk/conf/origin.cluster.serverB.conf b/trunk/conf/origin.cluster.serverB.conf
index 333d1e566..fe65bb0a3 100644
--- a/trunk/conf/origin.cluster.serverB.conf
+++ b/trunk/conf/origin.cluster.serverB.conf
@@ -15,6 +15,6 @@ vhost __defaultVhost__ {
     cluster {
         mode            local;
         origin_cluster  on;
-        coworkers       127.0.0.1:9090;
+        coworkers       127.0.0.1:9090 127.0.0.1:9092;
     }
 }
diff --git a/trunk/conf/origin.cluster.serverC.conf b/trunk/conf/origin.cluster.serverC.conf
new file mode 100644
index 000000000..72bec36e5
--- /dev/null
+++ b/trunk/conf/origin.cluster.serverC.conf
@@ -0,0 +1,20 @@
+# the config for srs origin-origin cluster
+# @see https://github.com/ossrs/srs/wiki/v3_EN_OriginCluster
+# @see full.conf for detail config.
+
+listen              19352;
+max_connections     1000;
+daemon              off;
+srs_log_tank        console;
+pid                 ./objs/origin.cluster.serverC.pid;
+http_api {
+    enabled         on;
+    listen          9092;
+}
+vhost __defaultVhost__ {
+    cluster {
+        mode            local;
+        origin_cluster  on;
+        coworkers       127.0.0.1:9090 127.0.0.1:9091;
+    }
+}
diff --git a/trunk/src/app/srs_app_rtmp_conn.cpp b/trunk/src/app/srs_app_rtmp_conn.cpp
index dc480dbeb..2eb26ff13 100644
--- a/trunk/src/app/srs_app_rtmp_conn.cpp
+++ b/trunk/src/app/srs_app_rtmp_conn.cpp
@@ -613,6 +613,11 @@ srs_error_t SrsRtmpConn::playing(SrsSource* source)
                 + "vhost=" + req->vhost + "&ip=" + req->host + "&app=" + req->app + "&stream=" + req->stream
                 + "&coworker=" + coworkers.at(i);
             if ((err = SrsHttpHooks::discover_co_workers(url, host, port)) != srs_success) {
+                // If failed to discovery stream in this coworker, we should request the next one util the last.
+                // @see https://github.com/ossrs/srs/issues/1223
+                if (i < (int)coworkers.size() - 1) {
+                    continue;
+                }
                 return srs_error_wrap(err, "discover coworkers, url=%s", url.c_str());
             }
             srs_trace("rtmp: redirect in cluster, from=%s:%d, target=%s:%d, url=%s",
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index a596bce9a..b1f3fd652 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -27,7 +27,7 @@
 // The version config.
 #define VERSION_MAJOR       3
 #define VERSION_MINOR       0
-#define VERSION_REVISION    73
+#define VERSION_REVISION    74
 
 // The macros generated by configure script.
 #include <srs_auto_headers.hpp>