diff --git a/src/case/button/node/siwtcher.tree.node.js b/src/case/button/node/siwtcher.tree.node.js
index 89d055c51..8669f697b 100644
--- a/src/case/button/node/siwtcher.tree.node.js
+++ b/src/case/button/node/siwtcher.tree.node.js
@@ -32,10 +32,10 @@ BI.TreeNodeSwitcher = BI.inherit(BI.NodeButton, {
             return BI.STYLE_CONSTANTS.LINK_LINE_TYPE === "solid" ? ["tree-solid-collapse-icon-type1", "tree-solid-expand-icon-type1"] : ["tree-collapse-icon-type2", "tree-expand-icon-type2"];
         } else if (options.isLastNode) {
             //  最后一个节点
-            return BI.STYLE_CONSTANTS.LINK_LINE_TYPE === "solid" ? ["tree-solid-collapse-icon-type1", "tree-solid-expand-icon-type1"] : ["tree-collapse-icon-type3", "tree-expand-icon-type3"];
+            return BI.STYLE_CONSTANTS.LINK_LINE_TYPE === "solid" ? ["tree-solid-collapse-icon-type1", "tree-solid-expand-icon-type1"] : ["tree-collapse-icon-type4", "tree-expand-icon-type4"];
         } else {
             //  其他情况
-            return BI.STYLE_CONSTANTS.LINK_LINE_TYPE === "solid" ? ["tree-solid-collapse-icon-type1", "tree-solid-expand-icon-type1"] : ["tree-collapse-icon-type4", "tree-expand-icon-type4"];
+            return BI.STYLE_CONSTANTS.LINK_LINE_TYPE === "solid" ? ["tree-solid-collapse-icon-type1", "tree-solid-expand-icon-type1"] : ["tree-collapse-icon-type3", "tree-expand-icon-type3"];
         }
     },