diff --git a/trunk/src/app/srs_app_hybrid.cpp b/trunk/src/app/srs_app_hybrid.cpp
index 313c5e0c8..cd8147327 100644
--- a/trunk/src/app/srs_app_hybrid.cpp
+++ b/trunk/src/app/srs_app_hybrid.cpp
@@ -98,6 +98,10 @@ srs_error_t SrsServerAdapter::run()
     return err;
 }
 
+void SrsServerAdapter::stop()
+{
+}
+
 SrsHybridServer::SrsHybridServer()
 {
 }
@@ -168,5 +172,14 @@ srs_error_t SrsHybridServer::run()
     return err;
 }
 
+void SrsHybridServer::stop()
+{
+    vector<ISrsHybridServer*>::iterator it;
+    for (it = servers.begin(); it != servers.end(); ++it) {
+        ISrsHybridServer* server = *it;
+        server->stop();
+    }
+}
+
 SrsHybridServer* _srs_hybrid = new SrsHybridServer();
 
diff --git a/trunk/src/app/srs_app_hybrid.hpp b/trunk/src/app/srs_app_hybrid.hpp
index 58aa6dff9..383456660 100644
--- a/trunk/src/app/srs_app_hybrid.hpp
+++ b/trunk/src/app/srs_app_hybrid.hpp
@@ -30,16 +30,22 @@
 
 class SrsServer;
 
+// The hibrid server interfaces, we could register many servers.
 class ISrsHybridServer
 {
 public:
     ISrsHybridServer();
     virtual ~ISrsHybridServer();
 public:
+    // Only ST initialized before each server, we could fork processes as such.
     virtual srs_error_t initialize() = 0;
+    // Run each server, should never block except the SRS master server.
     virtual srs_error_t run() = 0;
+    // Stop each server, should do cleanup, for example, kill processes forked by server.
+    virtual void stop() = 0;
 };
 
+// The SRS server adapter, the master server.
 class SrsServerAdapter : public ISrsHybridServer
 {
 private:
@@ -50,8 +56,10 @@ public:
 public:
     virtual srs_error_t initialize();
     virtual srs_error_t run();
+    virtual void stop();
 };
 
+// The hybrid server manager.
 class SrsHybridServer
 {
 private:
@@ -64,6 +72,7 @@ public:
 public:
     virtual srs_error_t initialize();
     virtual srs_error_t run();
+    virtual void stop();
 };
 
 extern SrsHybridServer* _srs_hybrid;
diff --git a/trunk/src/main/srs_main_server.cpp b/trunk/src/main/srs_main_server.cpp
index d3c527761..76ce742f7 100644
--- a/trunk/src/main/srs_main_server.cpp
+++ b/trunk/src/main/srs_main_server.cpp
@@ -420,14 +420,19 @@ srs_error_t run_hybrid_server()
     _srs_hybrid->register_server(new SrtServerAdapter());
 #endif
 
+    // Do some system initialize.
     if ((err = _srs_hybrid->initialize()) != srs_success) {
         return srs_error_wrap(err, "hybrid initialize");
     }
 
+    // Should run util hybrid servers all done.
     if ((err = _srs_hybrid->run()) != srs_success) {
         return srs_error_wrap(err, "hybrid run");
     }
 
+    // After all done, stop and cleanup.
+    _srs_hybrid->stop();
+
     return err;
 }
 
diff --git a/trunk/src/srt/srt_server.cpp b/trunk/src/srt/srt_server.cpp
index e518385a8..d7212c6a5 100644
--- a/trunk/src/srt/srt_server.cpp
+++ b/trunk/src/srt/srt_server.cpp
@@ -211,6 +211,9 @@ SrtServerAdapter::~SrtServerAdapter()
 srs_error_t SrtServerAdapter::initialize()
 {
     srs_error_t err = srs_success;
+
+    // TODO: FIXME: We could fork processes here, because here only ST is initialized.
+
     return err;
 }
 
@@ -218,6 +221,8 @@ srs_error_t SrtServerAdapter::run()
 {
     srs_error_t err = srs_success;
 
+    // TODO: FIXME: We could start a coroutine to dispatch SRT task to processes.
+
     if(_srs_config->get_srt_enabled()) {
         srs_trace("srt server is enabled...");
         unsigned short srt_port = _srs_config->get_srt_listen_port();
@@ -242,3 +247,8 @@ srs_error_t SrtServerAdapter::run()
 
     return err;
 }
+
+void SrtServerAdapter::stop()
+{
+    // TODO: FIXME: If forked processes, we should do cleanup.
+}
diff --git a/trunk/src/srt/srt_server.hpp b/trunk/src/srt/srt_server.hpp
index d235dfad6..27bb3bdfb 100644
--- a/trunk/src/srt/srt_server.hpp
+++ b/trunk/src/srt/srt_server.hpp
@@ -47,6 +47,7 @@ public:
 public:
     virtual srs_error_t initialize();
     virtual srs_error_t run();
+    virtual void stop();
 };
 
 #endif//SRT_SERVER_H
\ No newline at end of file