diff --git a/libs/actions.js b/libs/actions.js
index 0f8598c8..085318d5 100644
--- a/libs/actions.js
+++ b/libs/actions.js
@@ -1690,6 +1690,7 @@ actions.prototype.clickSyncSave = function (x,y) {
                 core.download(core.firstData.name+"_"+core.formatDate2(new Date())+".h5route", JSON.stringify({
                     'name': core.firstData.name,
                     'hard': core.status.hard,
+                    'seed': core.getFlag('seed'),
                     'route': core.encodeRoute(core.status.route)
                 }));
                 break;
@@ -1922,8 +1923,11 @@ actions.prototype.clickReplay = function (x, y) {
                 {
                     core.ui.closePanel();
                     var hard=core.status.hard, route=core.clone(core.status.route);
+                    var seed = core.getFlag('seed');
                     core.resetStatus(core.firstData.hero, hard, core.firstData.floorId, null, core.initStatus.maps);
                     core.events.setInitData(hard);
+                    core.setFlag('seed', seed);
+                    core.setFlag('rand', seed);
                     core.changeFloor(core.status.floorId, null, core.firstData.hero.loc, null, function() {
                         core.startReplay(route);
                     }, true);
diff --git a/libs/control.js b/libs/control.js
index a0707716..832681e7 100644
--- a/libs/control.js
+++ b/libs/control.js
@@ -1845,8 +1845,11 @@ control.prototype.doSL = function (id, type) {
             // core.drawTip("存档版本不匹配");
             if (confirm("存档版本不匹配！\n你想回放此存档的录像吗？")) {
                 core.dom.startPanel.style.display = 'none';
+                var seed = data.hero.flags.seed;
                 core.resetStatus(core.firstData.hero, data.hard, core.firstData.floorId, null, core.initStatus.maps);
                 core.events.setInitData(data.hard);
+                core.setFlag('seed', seed);
+                core.setFlag('rand', seed);
                 core.changeFloor(core.status.floorId, null, core.firstData.hero.loc, null, function() {
                     core.startReplay(core.decodeRoute(data.route));
                 }, true);
@@ -1878,7 +1881,7 @@ control.prototype.doSL = function (id, type) {
             return;
         }
         var route = core.subarray(core.status.route, core.decodeRoute(data.route));
-        if (!core.isset(route)) {
+        if (!core.isset(route) || data.hero.flags.seed!=core.getFlag('seed')) {
             core.drawTip("无法从此存档回放录像");
             return;
         }
diff --git a/libs/core.js b/libs/core.js
index 01c18446..79aef3b0 100644
--- a/libs/core.js
+++ b/libs/core.js
@@ -1085,6 +1085,16 @@ core.prototype.subarray = function (a, b) {
     return core.utils.subarray(a, b);
 }
 
+////// 生成随机数（seed方法） //////
+core.prototype.rand = function (num) {
+    return core.utils.rand(num);
+}
+
+////// 生成随机数（录像方法） //////
+core.prototype.rand2 = function (num) {
+    return core.utils.rand2(num);
+}
+
 ////// 读取一个本地文件内容 //////
 core.prototype.readFile = function (success, error, readType) {
     core.utils.readFile(success, error, readType);
diff --git a/libs/events.js b/libs/events.js
index c30ab341..cc6882c8 100644
--- a/libs/events.js
+++ b/libs/events.js
@@ -88,16 +88,19 @@ events.prototype.startGame = function (hard) {
                     core.flags.battleAnimate = true;
                     core.setLocalStorage('battleAnimate', true);
                     core.startGame(hard);
+                    core.utils.__init_seed();
                     core.events.setInitData(hard);
                 }, function () {
                     core.flags.battleAnimate = false;
                     core.setLocalStorage('battleAnimate', false);
                     core.startGame(hard);
+                    core.utils.__init_seed();
                     core.events.setInitData(hard);
                 });
             }
             else {
                 core.startGame(hard);
+                core.utils.__init_seed();
                 core.events.setInitData(hard);
             }
         });
@@ -141,6 +144,7 @@ events.prototype.gameOver = function (ending, fromReplay) {
                 'name': core.firstData.name,
                 'version': core.firstData.version,
                 'hard': core.status.hard,
+                'seed': core.getFlag('seed'),
                 'route': core.encodeRoute(core.status.route)
             }
             core.download(core.firstData.name+"_"+core.formatDate2(new Date())+".h5route", JSON.stringify(obj));
@@ -181,6 +185,7 @@ events.prototype.gameOver = function (ending, fromReplay) {
             formData.append('money', core.status.hero.money);
             formData.append('experience', core.status.hero.experience);
             formData.append('steps', core.status.hero.steps);
+            formData.append('seed', core.getFlag('seed'));
             formData.append('route', core.encodeRoute(core.status.route));
 
             core.http("POST", "/games/upload.php", formData);
diff --git a/libs/utils.js b/libs/utils.js
index 05cca350..52712f0c 100644
--- a/libs/utils.js
+++ b/libs/utils.js
@@ -241,8 +241,10 @@ utils.prototype.encodeRoute = function (route) {
                 ans+='N';
             else if (t.indexOf('move:')==0)
                 ans+="M"+t.substring(5);
-            else if (t=='key:')
+            else if (t.indexOf('key:')==0)
                 ans+='K'+t.substring(4);
+            else if (t.indexOf('random:')==0)
+                ans+='X'+t.substring(7);
         }
     });
     if (cnt>0) {
@@ -295,6 +297,7 @@ utils.prototype.decodeRoute = function (route) {
             case "N": ans.push("no"); break;
             case "M": ++index; ans.push("move:"+nxt+":"+getNumber()); break;
             case "K": ans.push("key:"+nxt); break;
+            case "X": ans.push("random:"+nxt); break;
         }
     }
     return ans;
@@ -319,6 +322,54 @@ utils.prototype.subarray = function (a, b) {
     return na;
 }
 
+utils.prototype.__init_seed = function () {
+    var rand = new Date().getTime()%34834795 + 3534;
+    rand = this.__next_rand(rand);
+    rand = this.__next_rand(rand);
+    rand = this.__next_rand(rand);
+    core.setFlag('seed', rand);
+    core.setFlag('rand', rand);
+}
+
+utils.prototype.__next_rand = function (_rand) {
+    _rand=(_rand%127773)*16807-~~(_rand/127773)*2836;
+    _rand+=_rand<0?2147483647:0;
+    return _rand;
+}
+
+utils.prototype.rand = function (num) {
+    var rand = core.getFlag('rand');
+    rand = this.__next_rand(rand);
+    core.setFlag('rand', rand);
+    var ans = rand/2147483647;
+    if (core.isset(num) && num>0)
+        return Math.floor(ans*num);
+    return ans;
+}
+
+////// 生成随机数（录像方法） //////
+utils.prototype.rand2 = function (num) {
+    num = num||2147483648;
+
+    var value;
+    if (core.status.replay.replaying) {
+        var action = core.status.replay.toReplay.shift();
+        if (action.indexOf("input:")==0 ) {
+            value=parseInt(action.substring(6));
+        }
+        else {
+            core.stopReplay();
+            core.drawTip("录像文件出错");
+            return;
+        }
+    }
+    else {
+        value = Math.floor(Math.random()*num);
+    }
+    core.status.route.push("random:"+value);
+    return value;
+}
+
 ////// 读取一个本地文件内容 //////
 utils.prototype.readFile = function (success, error, readType) {
 
diff --git a/main.js b/main.js
index 8ea26334..3fe630bc 100644
--- a/main.js
+++ b/main.js
@@ -487,6 +487,8 @@ main.dom.replayGame.onclick = function () {
         core.dom.startPanel.style.display = 'none';
         core.resetStatus(core.firstData.hero, obj.hard, core.firstData.floorId, null, core.initStatus.maps);
         core.events.setInitData(obj.hard);
+        core.setFlag('seed', obj.seed);
+        core.setFlag('rand', obj.seed);
         core.changeFloor(core.status.floorId, null, core.firstData.hero.loc, null, function() {
             core.startReplay(core.decodeRoute(obj.route));
         }, true);
diff --git a/更新说明.txt b/更新说明.txt
index d7a7caa9..cc5a5c91 100644
--- a/更新说明.txt
+++ b/更新说明.txt
@@ -7,7 +7,7 @@
 等待用户点击事件  √
 图片移动事件
 事件：设置BGM音量  √
-提供core.random函数提供随机数
+提供core.rand()和core.rand2()两个随机数函数  √
 作弊处理
 状态栏绘制
 六倍速播放  √