diff --git a/server/imserver/player.cc b/server/imserver/player.cc
index 1a095f7..2658820 100644
--- a/server/imserver/player.cc
+++ b/server/imserver/player.cc
@@ -1,6 +1,7 @@
 #include "precompile.h"
 
 #include <a8/openssl.h>
+#include <a8/timer.h>
 
 #include "player.h"
 #include "playermgr.h"
@@ -205,6 +206,29 @@ void Player::ForwardGroupCMMsg(f8::MsgHdr& hdr, long long hash_code)
     MSConnMgr::Instance()->SendMsg(msg, hash_code);
 }
 
+void Player::MarkDirty()
+{
+    if (!dirty_) {
+        dirty_ = true;
+        dirty_timer_ = a8::Timer::Instance()->
+            AddDeadLineTimerAndAttach(1000 * 60,
+                                      a8::XParams()
+                                      .SetSender((void*)this),
+                                      [] (const a8::XParams& param)
+                                      {
+                                          Player* hum = (Player*)param.sender.GetUserData();
+                                          hum->SaveToDB();
+                                      },
+                                      &timer_attacher.timer_list_,
+                                      [] (const a8::XParams& param)
+                                      {
+                                          Player* hum = (Player*)param.sender.GetUserData();
+                                          hum->dirty_timer_ = nullptr;
+                                      }
+                                      );
+    }
+}
+
 void Player::FillFriendDB(cs::MFFriendDB& friend_db)
 {