diff --git a/libs/actions.js b/libs/actions.js
index e93d5238..48601e6f 100644
--- a/libs/actions.js
+++ b/libs/actions.js
@@ -418,10 +418,6 @@ actions.prototype.ondown = function (x ,y) {
     }
 
     core.status.downTime = new Date();
-    // core.status.holdingPath=1;
-    //core.status.mouseOutCheck =1;
-    // window.setTimeout(core.clearStepPostfix);
-    core.saveCanvas('ui');
     core.clearMap('ui', 0, 0, 416,416);
     var pos={'x':x,'y':y}
     core.status.stepPostfix=[];
diff --git a/libs/maps.js b/libs/maps.js
index 90b12abb..5ae7fc93 100644
--- a/libs/maps.js
+++ b/libs/maps.js
@@ -520,8 +520,6 @@ maps.prototype.moveBlock = function(x,y,steps,time,immediateHide,callback) {
     time = time || 500;
     core.status.replay.animate=true;
 
-    //clearInterval(core.interval.tipAnimate);
-    core.saveCanvas('animate');
     core.clearMap('animate', 0, 0, 416, 416);
 
     var block = core.getBlock(x,y,core.status.floorId,false);
@@ -592,7 +590,6 @@ maps.prototype.moveBlock = function(x,y,steps,time,immediateHide,callback) {
             core.canvas.animate.drawImage(blockImage, animateCurrent * 32, blockIcon * 32, 32, 32, nowX, nowY, 32, 32);
             if (opacityVal<=0) {
                 clearInterval(animate);
-                core.loadCanvas('animate');
                 core.clearMap('animate', 0, 0, 416, 416);
                 core.setOpacity('animate', 1);
                 core.status.replay.animate=false;
@@ -620,8 +617,6 @@ maps.prototype.moveBlock = function(x,y,steps,time,immediateHide,callback) {
 maps.prototype.animateBlock = function (loc,type,time,callback) {
     if (type!='hide') type='show';
 
-    //clearInterval(core.interval.tipAnimate);
-    core.saveCanvas('animate');
     core.clearMap('animate', 0, 0, 416, 416);
 
     if (typeof loc[0] == 'number' && typeof loc[1] == 'number')
@@ -663,11 +658,9 @@ maps.prototype.animateBlock = function (loc,type,time,callback) {
         core.setOpacity('animate', opacityVal);
         core.clearMap('animate',0,0,416,416);
 
-        // core.canvas.animate.drawImage(blockImage, 0, blockIcon * 32, 32, 32, block.x * 32, block.y * 32, 32, 32);
         draw();
         if (opacityVal >=1 || opacityVal<=0) {
             clearInterval(animate);
-            core.loadCanvas('animate');
             core.clearMap('animate', 0, 0, 416, 416);
             core.setOpacity('animate', 1);
             core.status.replay.animate=false;
diff --git a/libs/ui.js b/libs/ui.js
index 7160ebf4..203552d8 100644
--- a/libs/ui.js
+++ b/libs/ui.js
@@ -163,7 +163,6 @@ ui.prototype.drawTip = function (text, itemIcon) {
     var textX, textY, width, height, hide = false, opacityVal = 0;
     clearInterval(core.interval.tipAnimate);
     core.setFont('data', "16px Arial");
-    core.saveCanvas('data');
     core.setOpacity('data', 0);
     core.canvas.data.textAlign = 'left';
     if (!core.isset(itemIcon)) {
@@ -194,7 +193,6 @@ ui.prototype.drawTip = function (text, itemIcon) {
         core.fillText('data', text, textX + 5, textY + 15, '#fff');
         if (opacityVal > 0.6 || opacityVal < 0) {
             if (hide) {
-                core.loadCanvas('data');
                 core.clearMap('data', 5, 5, 400, height);
                 core.setOpacity('data', 1);
                 clearInterval(core.interval.tipAnimate);
diff --git a/project/floors/sample0.js b/project/floors/sample0.js
index d5815cc9..e78b84ac 100644
--- a/project/floors/sample0.js
+++ b/project/floors/sample0.js
@@ -78,7 +78,6 @@ main.floors.sample0 =
         },
     },
     "changeFloor": { // 楼层转换事件；该事件不能和上面的events有冲突（同位置点），否则会被覆盖
-        "7,9": {"floorId": "sample1", "stair": "downFloor"},
         "6,0": {"floorId": "sample1", "stair": "downFloor"}, // 目标点：sample1层的下楼梯位置
         "0,11": {"floorId": "sample0", "loc": [0,12]}, // 目标点：sample0层的x=0,y=12位置
         "0,12": {"floorId": "sample0", "stair": "upFloor"}, // 注意，目标层有多个楼梯的话，写stair可能会导致到达位置不确定。这时候推荐写loc指明目标点位置。