diff --git a/public/css/background.css b/public/css/background.css
index f136e84640..1440b98542 100644
--- a/public/css/background.css
+++ b/public/css/background.css
@@ -17,10 +17,10 @@
   background: url('http://fine-design-storage.oss-cn-shanghai.aliyuncs.com/fineui/2.0/images/1x/icon/tree_vertical_line_4.png') no-repeat center center;
 }
 .ztree li ul.line {
-  background: url('http://fine-design-storage.oss-cn-shanghai.aliyuncs.com/fineui/2.0/images/1x/icon/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('http://fine-design-storage.oss-cn-shanghai.aliyuncs.com/fineui/2.0/images/1x/icon/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .bi-theme-dark .ztree li ul.line {
-  background: url('http://fine-design-storage.oss-cn-shanghai.aliyuncs.com/fineui/2.0/images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('http://fine-design-storage.oss-cn-shanghai.aliyuncs.com/fineui/2.0/images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .ztree li span.button.chk.checkbox_false_full {
   background: url('http://fine-design-storage.oss-cn-shanghai.aliyuncs.com/fineui/2.0/images/2x/icon/check_box_normal.png') no-repeat center center;
diff --git a/src/case/button/treeitem/item.first.treeleaf.js b/src/case/button/treeitem/item.first.treeleaf.js
index 89c0f3884a..d2a0865f73 100644
--- a/src/case/button/treeitem/item.first.treeleaf.js
+++ b/src/case/button/treeitem/item.first.treeleaf.js
@@ -42,11 +42,11 @@ BI.FirstTreeLeafItem = BI.inherit(BI.BasicButton, {
         });
         var type = BI.LogicFactory.createLogicTypeByDirection(BI.Direction.Left);
         var items = BI.LogicFactory.createLogicItemsByDirection(BI.Direction.Left, ((o.layer === 0) ? "" : {
-            width: 16,
+            width: 15,
             el: {
                 type: "bi.layout",
                 cls: (o.pNode && o.pNode.isLastNode) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             }
         }), {
diff --git a/src/case/button/treeitem/item.last.treeleaf.js b/src/case/button/treeitem/item.last.treeleaf.js
index 557efa5b0d..6f815bfe9e 100644
--- a/src/case/button/treeitem/item.last.treeleaf.js
+++ b/src/case/button/treeitem/item.last.treeleaf.js
@@ -42,11 +42,11 @@ BI.LastTreeLeafItem = BI.inherit(BI.BasicButton, {
         });
         var type = BI.LogicFactory.createLogicTypeByDirection(BI.Direction.Left);
         var items = BI.LogicFactory.createLogicItemsByDirection(BI.Direction.Left, ((o.layer === 0) ? "" : {
-            width: 16,
+            width: 15,
             el: {
                 type: "bi.layout",
                 cls: (o.pNode && o.pNode.isLastNode) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             }
         }), {
diff --git a/src/case/button/treeitem/item.mid.treeleaf.js b/src/case/button/treeitem/item.mid.treeleaf.js
index 0dbafcefd6..d1558e03d1 100644
--- a/src/case/button/treeitem/item.mid.treeleaf.js
+++ b/src/case/button/treeitem/item.mid.treeleaf.js
@@ -42,11 +42,11 @@ BI.MidTreeLeafItem = BI.inherit(BI.BasicButton, {
         });
         var type = BI.LogicFactory.createLogicTypeByDirection(BI.Direction.Left);
         var items = BI.LogicFactory.createLogicItemsByDirection(BI.Direction.Left, ((o.layer === 0) ? "" : {
-            width: 16,
+            width: 15,
             el: {
                 type: "bi.layout",
                 cls: (o.pNode && o.pNode.isLastNode) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             }
         }), {
diff --git a/src/css/base/colorchooser/colorpicker/editor.css b/src/css/base/colorchooser/colorpicker/editor.css
index 770680b915..ffd4e071e2 100644
--- a/src/css/base/colorchooser/colorpicker/editor.css
+++ b/src/css/base/colorchooser/colorpicker/editor.css
@@ -17,10 +17,10 @@
   background: url('images/1x/icon/tree_vertical_line_4.png') no-repeat center center;
 }
 .ztree li ul.line {
-  background: url('images/1x/icon/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('images/1x/icon/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .bi-theme-dark .ztree li ul.line {
-  background: url('images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .ztree li span.button.chk.checkbox_false_full {
   background: url('images/2x/icon/check_box_normal.png') no-repeat center center;
diff --git a/src/css/base/tree/ztree.css b/src/css/base/tree/ztree.css
index c538f84b05..efe4551d14 100644
--- a/src/css/base/tree/ztree.css
+++ b/src/css/base/tree/ztree.css
@@ -17,7 +17,7 @@
 }
 .ztree li ul {
   margin: 0;
-  padding: 0 0 0 22px;
+  padding: 0 0 0 18px;
 }
 .ztree li a {
   padding: 1px 3px 0 0;
@@ -137,8 +137,8 @@
   background-position: -42px -56px;
 }
 .ztree li span.button.switch {
-  width: 30px;
-  height: 30px;
+  width: 25px;
+  height: 25px;
 }
 .ztree li span.button.noline_open {
   background-position: -92px -72px;
diff --git a/src/css/resource/background.css b/src/css/resource/background.css
index 3309361275..1adb7984d1 100644
--- a/src/css/resource/background.css
+++ b/src/css/resource/background.css
@@ -17,10 +17,10 @@
   background: url('images/1x/icon/tree_vertical_line_4.png') no-repeat center center;
 }
 .ztree li ul.line {
-  background: url('images/1x/icon/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('images/1x/icon/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .bi-theme-dark .ztree li ul.line {
-  background: url('images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .ztree li span.button.chk.checkbox_false_full {
   background: url('images/2x/icon/check_box_normal.png') no-repeat center center;
diff --git a/src/less/base/tree/ztree.less b/src/less/base/tree/ztree.less
index c60e186296..26f2146d47 100644
--- a/src/less/base/tree/ztree.less
+++ b/src/less/base/tree/ztree.less
@@ -22,7 +22,7 @@
 
 .ztree li ul {
   margin: 0;
-  padding: 0 0 0 22px
+  padding: 0 0 0 18px
 }
 
 .ztree li a {
@@ -181,8 +181,8 @@
 }
 
 .ztree li span.button.switch {
-  width: 30px;
-  height: 30px
+  width: 25px;
+  height: 25px
 }
 
 .ztree li span.button.noline_open {
diff --git a/src/less/resource/background.less b/src/less/resource/background.less
index 120593e342..e1eb69d358 100644
--- a/src/less/resource/background.less
+++ b/src/less/resource/background.less
@@ -29,12 +29,12 @@
 }
 
 .ztree li ul.line {
-  .imagePath(@icon-tree-vertical-line-1, 0, 0, repeat-y);
+  .imagePath(@icon-tree-vertical-line-1, 0, 1px, repeat-y);
 }
 
 .bi-theme-dark {
   .ztree li ul.line {
-    .imagePath(@icon-tree-vertical-line-1-theme-dark, 0, 0, repeat-y);
+    .imagePath(@icon-tree-vertical-line-1-theme-dark, 0, 1px, repeat-y);
   }
 }
 
diff --git a/src/widget/multilayerselecttree/node/node.first.plus.js b/src/widget/multilayerselecttree/node/node.first.plus.js
index fa7e372436..b54c986e20 100644
--- a/src/widget/multilayerselecttree/node/node.first.plus.js
+++ b/src/widget/multilayerselecttree/node/node.first.plus.js
@@ -56,7 +56,7 @@ BI.MultiLayerSelectTreeFirstPlusGroupNode = BI.inherit(BI.NodeButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayerselecttree/node/node.last.plus.js b/src/widget/multilayerselecttree/node/node.last.plus.js
index d3a6a99003..3795754e14 100644
--- a/src/widget/multilayerselecttree/node/node.last.plus.js
+++ b/src/widget/multilayerselecttree/node/node.last.plus.js
@@ -56,7 +56,7 @@ BI.MultiLayerSelectTreeLastPlusGroupNode = BI.inherit(BI.NodeButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayerselecttree/node/node.mid.plus.js b/src/widget/multilayerselecttree/node/node.mid.plus.js
index 9466654d09..05988523dd 100644
--- a/src/widget/multilayerselecttree/node/node.mid.plus.js
+++ b/src/widget/multilayerselecttree/node/node.mid.plus.js
@@ -56,7 +56,7 @@ BI.MultiLayerSelectTreeMidPlusGroupNode = BI.inherit(BI.NodeButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayerselecttree/node/node.plus.js b/src/widget/multilayerselecttree/node/node.plus.js
index 8d1a3679a4..57f02ee209 100644
--- a/src/widget/multilayerselecttree/node/node.plus.js
+++ b/src/widget/multilayerselecttree/node/node.plus.js
@@ -56,7 +56,7 @@ BI.MultiLayerSelectTreePlusGroupNode = BI.inherit(BI.NodeButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayersingletree/node/node.first.plus.js b/src/widget/multilayersingletree/node/node.first.plus.js
index 5024d2904d..8165397ab7 100644
--- a/src/widget/multilayersingletree/node/node.first.plus.js
+++ b/src/widget/multilayersingletree/node/node.first.plus.js
@@ -36,7 +36,7 @@ BI.MultiLayerSingleTreeFirstPlusGroupNode = BI.inherit(BI.NodeButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayersingletree/node/node.last.plus.js b/src/widget/multilayersingletree/node/node.last.plus.js
index 1d00ad20fd..943b91d79a 100644
--- a/src/widget/multilayersingletree/node/node.last.plus.js
+++ b/src/widget/multilayersingletree/node/node.last.plus.js
@@ -36,7 +36,7 @@ BI.MultiLayerSingleTreeLastPlusGroupNode = BI.inherit(BI.NodeButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayersingletree/node/node.mid.plus.js b/src/widget/multilayersingletree/node/node.mid.plus.js
index 3d0a6eb17b..7fe025d524 100644
--- a/src/widget/multilayersingletree/node/node.mid.plus.js
+++ b/src/widget/multilayersingletree/node/node.mid.plus.js
@@ -36,7 +36,7 @@ BI.MultiLayerSingleTreeMidPlusGroupNode = BI.inherit(BI.NodeButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayersingletree/treeitem/item.first.treeleaf.js b/src/widget/multilayersingletree/treeitem/item.first.treeleaf.js
index 9ad705a676..be8e3b10e5 100644
--- a/src/widget/multilayersingletree/treeitem/item.first.treeleaf.js
+++ b/src/widget/multilayersingletree/treeitem/item.first.treeleaf.js
@@ -57,7 +57,7 @@ BI.MultiLayerSingleTreeFirstTreeLeafItem = BI.inherit(BI.BasicButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayersingletree/treeitem/item.last.treeleaf.js b/src/widget/multilayersingletree/treeitem/item.last.treeleaf.js
index 3edfc4865a..4d639f1a5a 100644
--- a/src/widget/multilayersingletree/treeitem/item.last.treeleaf.js
+++ b/src/widget/multilayersingletree/treeitem/item.last.treeleaf.js
@@ -56,7 +56,7 @@ BI.MultiLayerSingleTreeLastTreeLeafItem = BI.inherit(BI.BasicButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/src/widget/multilayersingletree/treeitem/item.mid.treeleaf.js b/src/widget/multilayersingletree/treeitem/item.mid.treeleaf.js
index ce65c03f5e..c1e14f9a6d 100644
--- a/src/widget/multilayersingletree/treeitem/item.mid.treeleaf.js
+++ b/src/widget/multilayersingletree/treeitem/item.mid.treeleaf.js
@@ -56,7 +56,7 @@ BI.MultiLayerSingleTreeMidTreeLeafItem = BI.inherit(BI.BasicButton, {
             items.push({
                 type: "bi.layout",
                 cls: BI.contains(needBlankLayers, index) ? "" : "base-line-conn-background",
-                width: 16,
+                width: 15,
                 height: o.height
             });
         });
diff --git a/ui/css/background.css b/ui/css/background.css
index 82c81f2c32..be8d957f19 100644
--- a/ui/css/background.css
+++ b/ui/css/background.css
@@ -17,10 +17,10 @@
   background: url('resources?path=/com/fr/web/ui/images/1x/icon/tree_vertical_line_4.png') no-repeat center center;
 }
 .ztree li ul.line {
-  background: url('resources?path=/com/fr/web/ui/images/1x/icon/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('resources?path=/com/fr/web/ui/images/1x/icon/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .bi-theme-dark .ztree li ul.line {
-  background: url('resources?path=/com/fr/web/ui/images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 0 0;
+  background: url('resources?path=/com/fr/web/ui/images/1x/icon/dark/tree_vertical_line_1.png') repeat-y 1px 0;
 }
 .ztree li span.button.chk.checkbox_false_full {
   background: url('resources?path=/com/fr/web/ui/images/2x/icon/check_box_normal.png') no-repeat center center;