diff --git a/client/ScreenManager.cpp b/client/ScreenManager.cpp
index a2857b9..7734c26 100644
--- a/client/ScreenManager.cpp
+++ b/client/ScreenManager.cpp
@@ -341,7 +341,7 @@ DWORD WINAPI CScreenManager::WorkThreadProc(LPVOID lParam)
         ULONG ulNextSendLength = 0;
         const char*	szBuffer = This->GetNextScreen(ulNextSendLength);
         if (szBuffer) {
-            s0 = max(s0, 50); // 最快每秒20帧
+            s0 = max(s0, 1000./This->m_nMaxFPS); // 最快每秒20帧
             s0 = min(s0, 1000);
             int span = s0-(clock() - last);
             Sleep(span > 0 ? span : 1);
@@ -361,7 +361,7 @@ DWORD WINAPI CScreenManager::WorkThreadProc(LPVOID lParam)
                     s0 = (s0 >= sleep/4) ? s0/alpha : s0;
                     c2 = 0;
 #if _DEBUG
-                    if (1000./s0<20.0)
+                    if (1000./s0<This->m_nMaxFPS)
                         Mprintf("[-]SendScreen Span= %dms, s0= %f, fps= %f\n", span, s0, 1000./s0);
 #endif
                 }
@@ -478,6 +478,11 @@ VOID CScreenManager::OnReceive(PBYTE szBuffer, ULONG ulLength)
         m_ClientObject->SetMultiThreadCompress(threadNum);
         break;
     }
+    case CMD_FPS: {
+        m_nMaxFPS = min(255, unsigned(szBuffer[1]));
+        m_nMaxFPS = max(m_nMaxFPS, 1);
+        break;
+    }
     case COMMAND_NEXT: {
         m_DlgID = ulLength >= 9 ? *((uint64_t*)(szBuffer + 1)) : 0;
         NotifyDialogIsOpen();
diff --git a/client/ScreenManager.h b/client/ScreenManager.h
index a6af80c..932b952 100644
--- a/client/ScreenManager.h
+++ b/client/ScreenManager.h
@@ -64,6 +64,7 @@ public:
     virtual BOOL OnReconnect();
     uint64_t            m_DlgID = 0;
     BOOL                m_SendFirst = FALSE;
+    int                 m_nMaxFPS = 20;
     // ��������
     BOOL                m_virtual;
     POINT               m_point;
diff --git a/common/commands.h b/common/commands.h
index 3ad165d..9c2f584 100644
--- a/common/commands.h
+++ b/common/commands.h
@@ -197,6 +197,7 @@ enum {
     COMMAND_SEND_FILE = 68,         // �����ļ�
     COMMAND_SWITCH_SCREEN = 69,
     CMD_MULTITHREAD_COMPRESS = 70,
+    CMD_FPS = 71,
 
     // ����˷����ı�ʶ
     TOKEN_AUTH = 100,				// Ҫ����֤
diff --git a/server/2015Remote/ScreenSpyDlg.cpp b/server/2015Remote/ScreenSpyDlg.cpp
index b7dc3bc..85e8ce9 100644
--- a/server/2015Remote/ScreenSpyDlg.cpp
+++ b/server/2015Remote/ScreenSpyDlg.cpp
@@ -29,6 +29,12 @@ enum {
     IDM_SAVEAVI_H264,
     IDM_SWITCHSCREEN,
     IDM_MULTITHREAD_COMPRESS,
+    IDM_FPS_10,
+    IDM_FPS_15,
+    IDM_FPS_20,
+    IDM_FPS_25,
+    IDM_FPS_30,
+    IDM_FPS_UNLIMITED,
 };
 
 IMPLEMENT_DYNAMIC(CScreenSpyDlg, CDialog)
@@ -246,6 +252,12 @@ BOOL CScreenSpyDlg::OnInitDialog()
         SysMenu->AppendMenu(MF_STRING, IDM_SET_CLIPBOARD, "设置剪贴板(&L)");
         SysMenu->AppendMenu(MF_STRING, IDM_SWITCHSCREEN, "切换显示器(&1)");
         SysMenu->AppendMenu(MF_STRING, IDM_MULTITHREAD_COMPRESS, "多线程压缩(&2)");
+        SysMenu->AppendMenu(MF_STRING, IDM_FPS_10, "最大帧率FPS:10");
+        SysMenu->AppendMenu(MF_STRING, IDM_FPS_15, "最大帧率FPS:15");
+        SysMenu->AppendMenu(MF_STRING, IDM_FPS_20, "最大帧率FPS:20");
+        SysMenu->AppendMenu(MF_STRING, IDM_FPS_25, "最大帧率FPS:25");
+        SysMenu->AppendMenu(MF_STRING, IDM_FPS_30, "最大帧率FPS:30");
+        SysMenu->AppendMenu(MF_STRING, IDM_FPS_UNLIMITED, "最大帧率无限制");
         SysMenu->AppendMenu(MF_SEPARATOR);
 
         BOOL all = THIS_CFG.GetInt("settings", "MultiScreen");
@@ -657,6 +669,14 @@ void CScreenSpyDlg::OnSysCommand(UINT nID, LPARAM lParam)
         break;
     }
 
+    case IDM_FPS_10:    case IDM_FPS_15:    case IDM_FPS_20:
+    case IDM_FPS_25:    case IDM_FPS_30:    case IDM_FPS_UNLIMITED: {
+        int fps = 10 + (nID - IDM_FPS_10) * 5;
+		BYTE	bToken[2] = { CMD_FPS, nID == IDM_FPS_UNLIMITED ? 255 : fps };
+		m_ContextObject->Send2Client(bToken, sizeof(bToken));
+        break;
+    }
+
     case IDM_TRACE_CURSOR: { // 跟踪被控端鼠标
         m_bIsTraceCursor = !m_bIsTraceCursor; //这里在改变数据
         SysMenu->CheckMenuItem(IDM_TRACE_CURSOR, m_bIsTraceCursor ? MF_CHECKED : MF_UNCHECKED);//在菜单打钩不打钩