diff --git a/changelog.md b/changelog.md
index 70356883d3..7644bc46f5 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,6 @@
 # 更新日志
 2.0(2020-11)
+- bi.textarea_editor添加setWatermark方法
 - 修复了颜色选择器hex框不能输入为空的问题
 - 增加纯文本组件bi.pure_text
 - store支持webworker,引入多线程机制
diff --git a/src/base/single/editor/editor.textarea.js b/src/base/single/editor/editor.textarea.js
index 37be81a9f5..91274d7af6 100644
--- a/src/base/single/editor/editor.textarea.js
+++ b/src/base/single/editor/editor.textarea.js
@@ -16,7 +16,7 @@ BI.TextAreaEditor = BI.inherit(BI.Single, {
         });
     },
 
-    render: function() {
+    render: function () {
         var o = this.options, self = this;
         this.content = BI.createWidget({
             type: "bi.layout",
@@ -25,7 +25,7 @@ BI.TextAreaEditor = BI.inherit(BI.Single, {
             height: "100%",
             cls: "bi-textarea textarea-editor-content display-block"
         });
-        this.content.element.css({resize: "none"});
+        this.content.element.css({ resize: "none" });
         BI.createWidget({
             type: "bi.absolute",
             element: this,
@@ -175,6 +175,11 @@ BI.TextAreaEditor = BI.inherit(BI.Single, {
         return this.style;
     },
 
+    setWatermark: function (v) {
+        this.options.watermark = v;
+        this._checkWaterMark();
+    },
+
     _setValid: function (b) {
         BI.TextAreaEditor.superclass._setValid.apply(this, arguments);
         // this.content.setValid(b);
@@ -189,4 +194,4 @@ BI.TextAreaEditor = BI.inherit(BI.Single, {
 BI.TextAreaEditor.EVENT_CHANGE = "EVENT_CHANGE";
 BI.TextAreaEditor.EVENT_BLUR = "EVENT_BLUR";
 BI.TextAreaEditor.EVENT_FOCUS = "EVENT_FOCUS";
-BI.shortcut("bi.textarea_editor", BI.TextAreaEditor);
\ No newline at end of file
+BI.shortcut("bi.textarea_editor", BI.TextAreaEditor);