diff --git a/src/widget/multilayerselecttree/multilayerselecttree.combo.js b/src/widget/multilayerselecttree/multilayerselecttree.combo.js
index 9d334bffd..ec2a9a393 100644
--- a/src/widget/multilayerselecttree/multilayerselecttree.combo.js
+++ b/src/widget/multilayerselecttree/multilayerselecttree.combo.js
@@ -260,11 +260,11 @@ BI.MultiLayerSelectTreeCombo = BI.inherit(BI.Widget, {
     },
 
     focus: function () {
-        this.trigger.focus();
+        this.trigger ? this.trigger.focus() : this.textTrigger.focus();
     },
 
     blur: function () {
-        this.trigger.blur();
+        this.trigger ? this.trigger.blur() : this.textTrigger.blur();
     },
 
     showView: function () {
@@ -272,7 +272,7 @@ BI.MultiLayerSelectTreeCombo = BI.inherit(BI.Widget, {
     },
 
     setWaterMark: function (v) {
-        this.trigger.setWaterMark(v);
+        this.trigger ? this.trigger.setWaterMark(v) : this.textTrigger.setWaterMark(v);
     }
 });