diff --git a/dist/bundle.js b/dist/bundle.js
index 4c571c2f4..94af97ba8 100644
--- a/dist/bundle.js
+++ b/dist/bundle.js
@@ -83377,6 +83377,8 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         },
 
         setValue: function (v) {
+            v = v || "";
+            v = v.startWith("<div>") ? v : "<div>" + v + "</div>";
             this.instance.setContent(v);
         },
 
@@ -83400,6 +83402,7 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
     BI.NicEditor.EVENT_BLUR = "blur";
     BI.NicEditor.EVENT_FOCUS = "focus";
     BI.NicEditor.EVENT_KEYDOWN = "keydown";
+    BI.NicEditor.EVENT_KEYUP = "keyup";
     BI.shortcut("bi.nic_editor", BI.NicEditor);
 
     var prefix = "niceditor-";
@@ -83409,6 +83412,8 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         _init: function () {
             nicEditorInstance.superclass._init.apply(this, arguments);
             var o = this.options;
+            var initValue = o.value || "<br>";
+            initValue = initValue.startWith("<div>") ? initValue : "<div>" + initValue + "</div>";
             this.ne = this.options.ne;
             this.elm = BI.createWidget({
                 type: "bi.layout",
@@ -83418,8 +83423,9 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             this.elm.element.css({
                 minHeight: BI.isNumber(o.height) ? (o.height - 8) + "px" : o.height,
                 outline: "none",
-                padding: "0 10px"
-            }).html(o.value);
+                padding: "0 10px",
+                wordWrap: "break-word"
+            }).html(initValue);
 
             if(o.readOnly) {
                 this.elm.element.attr("contentEditable", false);
@@ -83453,8 +83459,7 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             }
             this.instanceDoc = document.defaultView;
             this.elm.element.on("mousedown", BI.bind(this.selected, this));
-            this.elm.element.on("keyup", BI.bind(this.keyDown, this));
-            // this.elm.element.on("keydown", BI.bind(this.keyDown, this));
+            this.elm.element.on("keydown", BI.bind(this.keyDown, this));
             this.elm.element.on("focus", BI.bind(this.selected, this));
             this.elm.element.on("blur", BI.bind(this.blur, this));
             this.elm.element.on("keyup", BI.bind(this.selected, this));
@@ -83566,6 +83571,13 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         },
 
         keyDown: function (e, t) {
+            if (e.keyCode === 8) {
+                var html = this.elm.element.html().toLowerCase().trim();
+                if (html === "<div><br></div>" || html === "<div></div>") {
+                    e.preventDefault()
+                    return;
+                }
+            }
             this.ne.fireEvent("keydown", e);
         },
 
@@ -83587,6 +83599,19 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
                 this.isFocused = true;
                 this.elm.element.addClass(prefix + "selected");
             }
+            this.ne.fireEvent("keyup", e);
+
+            if (e.keyCode !== 8) {
+                return;
+            }
+            var newLine;
+            var html = this.elm.element.html().toLowerCase().trim();
+            if (!html || html === '<br>') {
+                newLine = $("<div></div>");
+                this.elm.element.html('');
+                this.elm.element.append(newLine);
+                this.setFocus(newLine[0]);
+            }
             // return false;
         },
 
@@ -83668,6 +83693,38 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             document.execCommand(cmd, false, args);
         },
 
+        initSelection: function (newLine) {
+            var newLineHtml = this._getNewLine();
+            var el = this.elm.element;
+            var children = el.children();
+            if (!children.length) {
+                // 如果编辑器区域无内容，添加一个空行，重新设置选区
+                el.append(newLineHtml);
+                this.initSelection();
+                return;
+            }
+            
+            var last = children.last();
+
+            if (newLine) {
+                // 新增一个空行
+                var html = last.html().toLowerCase();
+                var nodeName = last.nodeName;
+                if ((html !== "<br>" && html !== "<br\/>") || nodeName !== "DIV") {
+                    // 最后一个元素不是空行，添加一个空行，重新设置选区
+                    el.append(newLineHtml);
+                    this.initSelection();
+                    return;
+                }
+            }
+
+            this.setFocus(last[0]);
+        },
+
+        _getNewLine: function () {
+            return "<div><br></div>";
+        },
+
         _isChildOf: function(child, parent) {
             var parentNode;
             if(child && parent) {
@@ -83680,6 +83737,13 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
                 }
             }
             return false;
+        },
+
+        _isIE11Below: function() {
+            if (!BI.isIE()) {
+                return false;
+            }
+            return BI.getIEVersion() < 11;
         }
     });
 }());
diff --git a/dist/case.js b/dist/case.js
index f7d1b71c8..198c26331 100644
--- a/dist/case.js
+++ b/dist/case.js
@@ -10821,6 +10821,8 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         },
 
         setValue: function (v) {
+            v = v || "";
+            v = v.startWith("<div>") ? v : "<div>" + v + "</div>";
             this.instance.setContent(v);
         },
 
@@ -10844,6 +10846,7 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
     BI.NicEditor.EVENT_BLUR = "blur";
     BI.NicEditor.EVENT_FOCUS = "focus";
     BI.NicEditor.EVENT_KEYDOWN = "keydown";
+    BI.NicEditor.EVENT_KEYUP = "keyup";
     BI.shortcut("bi.nic_editor", BI.NicEditor);
 
     var prefix = "niceditor-";
@@ -10853,6 +10856,8 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         _init: function () {
             nicEditorInstance.superclass._init.apply(this, arguments);
             var o = this.options;
+            var initValue = o.value || "<br>";
+            initValue = initValue.startWith("<div>") ? initValue : "<div>" + initValue + "</div>";
             this.ne = this.options.ne;
             this.elm = BI.createWidget({
                 type: "bi.layout",
@@ -10862,8 +10867,9 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             this.elm.element.css({
                 minHeight: BI.isNumber(o.height) ? (o.height - 8) + "px" : o.height,
                 outline: "none",
-                padding: "0 10px"
-            }).html(o.value);
+                padding: "0 10px",
+                wordWrap: "break-word"
+            }).html(initValue);
 
             if(o.readOnly) {
                 this.elm.element.attr("contentEditable", false);
@@ -10897,8 +10903,7 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             }
             this.instanceDoc = document.defaultView;
             this.elm.element.on("mousedown", BI.bind(this.selected, this));
-            this.elm.element.on("keyup", BI.bind(this.keyDown, this));
-            // this.elm.element.on("keydown", BI.bind(this.keyDown, this));
+            this.elm.element.on("keydown", BI.bind(this.keyDown, this));
             this.elm.element.on("focus", BI.bind(this.selected, this));
             this.elm.element.on("blur", BI.bind(this.blur, this));
             this.elm.element.on("keyup", BI.bind(this.selected, this));
@@ -11010,6 +11015,13 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         },
 
         keyDown: function (e, t) {
+            if (e.keyCode === 8) {
+                var html = this.elm.element.html().toLowerCase().trim();
+                if (html === "<div><br></div>" || html === "<div></div>") {
+                    e.preventDefault()
+                    return;
+                }
+            }
             this.ne.fireEvent("keydown", e);
         },
 
@@ -11031,6 +11043,19 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
                 this.isFocused = true;
                 this.elm.element.addClass(prefix + "selected");
             }
+            this.ne.fireEvent("keyup", e);
+
+            if (e.keyCode !== 8) {
+                return;
+            }
+            var newLine;
+            var html = this.elm.element.html().toLowerCase().trim();
+            if (!html || html === '<br>') {
+                newLine = $("<div></div>");
+                this.elm.element.html('');
+                this.elm.element.append(newLine);
+                this.setFocus(newLine[0]);
+            }
             // return false;
         },
 
@@ -11112,6 +11137,38 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             document.execCommand(cmd, false, args);
         },
 
+        initSelection: function (newLine) {
+            var newLineHtml = this._getNewLine();
+            var el = this.elm.element;
+            var children = el.children();
+            if (!children.length) {
+                // 如果编辑器区域无内容，添加一个空行，重新设置选区
+                el.append(newLineHtml);
+                this.initSelection();
+                return;
+            }
+            
+            var last = children.last();
+
+            if (newLine) {
+                // 新增一个空行
+                var html = last.html().toLowerCase();
+                var nodeName = last.nodeName;
+                if ((html !== "<br>" && html !== "<br\/>") || nodeName !== "DIV") {
+                    // 最后一个元素不是空行，添加一个空行，重新设置选区
+                    el.append(newLineHtml);
+                    this.initSelection();
+                    return;
+                }
+            }
+
+            this.setFocus(last[0]);
+        },
+
+        _getNewLine: function () {
+            return "<div><br></div>";
+        },
+
         _isChildOf: function(child, parent) {
             var parentNode;
             if(child && parent) {
@@ -11124,6 +11181,13 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
                 }
             }
             return false;
+        },
+
+        _isIE11Below: function() {
+            if (!BI.isIE()) {
+                return false;
+            }
+            return BI.getIEVersion() < 11;
         }
     });
 }());
diff --git a/dist/fineui.js b/dist/fineui.js
index c01193680..e95854888 100644
--- a/dist/fineui.js
+++ b/dist/fineui.js
@@ -83626,6 +83626,8 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         },
 
         setValue: function (v) {
+            v = v || "";
+            v = v.startWith("<div>") ? v : "<div>" + v + "</div>";
             this.instance.setContent(v);
         },
 
@@ -83649,6 +83651,7 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
     BI.NicEditor.EVENT_BLUR = "blur";
     BI.NicEditor.EVENT_FOCUS = "focus";
     BI.NicEditor.EVENT_KEYDOWN = "keydown";
+    BI.NicEditor.EVENT_KEYUP = "keyup";
     BI.shortcut("bi.nic_editor", BI.NicEditor);
 
     var prefix = "niceditor-";
@@ -83658,6 +83661,8 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         _init: function () {
             nicEditorInstance.superclass._init.apply(this, arguments);
             var o = this.options;
+            var initValue = o.value || "<br>";
+            initValue = initValue.startWith("<div>") ? initValue : "<div>" + initValue + "</div>";
             this.ne = this.options.ne;
             this.elm = BI.createWidget({
                 type: "bi.layout",
@@ -83667,8 +83672,9 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             this.elm.element.css({
                 minHeight: BI.isNumber(o.height) ? (o.height - 8) + "px" : o.height,
                 outline: "none",
-                padding: "0 10px"
-            }).html(o.value);
+                padding: "0 10px",
+                wordWrap: "break-word"
+            }).html(initValue);
 
             if(o.readOnly) {
                 this.elm.element.attr("contentEditable", false);
@@ -83702,8 +83708,7 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             }
             this.instanceDoc = document.defaultView;
             this.elm.element.on("mousedown", BI.bind(this.selected, this));
-            this.elm.element.on("keyup", BI.bind(this.keyDown, this));
-            // this.elm.element.on("keydown", BI.bind(this.keyDown, this));
+            this.elm.element.on("keydown", BI.bind(this.keyDown, this));
             this.elm.element.on("focus", BI.bind(this.selected, this));
             this.elm.element.on("blur", BI.bind(this.blur, this));
             this.elm.element.on("keyup", BI.bind(this.selected, this));
@@ -83815,6 +83820,13 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
         },
 
         keyDown: function (e, t) {
+            if (e.keyCode === 8) {
+                var html = this.elm.element.html().toLowerCase().trim();
+                if (html === "<div><br></div>" || html === "<div></div>") {
+                    e.preventDefault()
+                    return;
+                }
+            }
             this.ne.fireEvent("keydown", e);
         },
 
@@ -83836,6 +83848,19 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
                 this.isFocused = true;
                 this.elm.element.addClass(prefix + "selected");
             }
+            this.ne.fireEvent("keyup", e);
+
+            if (e.keyCode !== 8) {
+                return;
+            }
+            var newLine;
+            var html = this.elm.element.html().toLowerCase().trim();
+            if (!html || html === '<br>') {
+                newLine = $("<div></div>");
+                this.elm.element.html('');
+                this.elm.element.append(newLine);
+                this.setFocus(newLine[0]);
+            }
             // return false;
         },
 
@@ -83917,6 +83942,38 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
             document.execCommand(cmd, false, args);
         },
 
+        initSelection: function (newLine) {
+            var newLineHtml = this._getNewLine();
+            var el = this.elm.element;
+            var children = el.children();
+            if (!children.length) {
+                // 如果编辑器区域无内容，添加一个空行，重新设置选区
+                el.append(newLineHtml);
+                this.initSelection();
+                return;
+            }
+            
+            var last = children.last();
+
+            if (newLine) {
+                // 新增一个空行
+                var html = last.html().toLowerCase();
+                var nodeName = last.nodeName;
+                if ((html !== "<br>" && html !== "<br\/>") || nodeName !== "DIV") {
+                    // 最后一个元素不是空行，添加一个空行，重新设置选区
+                    el.append(newLineHtml);
+                    this.initSelection();
+                    return;
+                }
+            }
+
+            this.setFocus(last[0]);
+        },
+
+        _getNewLine: function () {
+            return "<div><br></div>";
+        },
+
         _isChildOf: function(child, parent) {
             var parentNode;
             if(child && parent) {
@@ -83929,6 +83986,13 @@ BI.shortcut("bi.rich_editor_text_toolbar", BI.RichEditorTextToolbar);/**
                 }
             }
             return false;
+        },
+
+        _isIE11Below: function() {
+            if (!BI.isIE()) {
+                return false;
+            }
+            return BI.getIEVersion() < 11;
         }
     });
 }());
diff --git a/src/case/richeditor/niceditor/niceditor.js b/src/case/richeditor/niceditor/niceditor.js
index 4d2bd97db..64dde7209 100644
--- a/src/case/richeditor/niceditor/niceditor.js
+++ b/src/case/richeditor/niceditor/niceditor.js
@@ -85,6 +85,8 @@
         },
 
         setValue: function (v) {
+            v = v || "";
+            v = v.startWith("<div>") ? v : "<div>" + v + "</div>";
             this.instance.setContent(v);
         },
 
@@ -108,6 +110,7 @@
     BI.NicEditor.EVENT_BLUR = "blur";
     BI.NicEditor.EVENT_FOCUS = "focus";
     BI.NicEditor.EVENT_KEYDOWN = "keydown";
+    BI.NicEditor.EVENT_KEYUP = "keyup";
     BI.shortcut("bi.nic_editor", BI.NicEditor);
 
     var prefix = "niceditor-";
@@ -117,6 +120,8 @@
         _init: function () {
             nicEditorInstance.superclass._init.apply(this, arguments);
             var o = this.options;
+            var initValue = o.value || "<br>";
+            initValue = initValue.startWith("<div>") ? initValue : "<div>" + initValue + "</div>";
             this.ne = this.options.ne;
             this.elm = BI.createWidget({
                 type: "bi.layout",
@@ -126,8 +131,9 @@
             this.elm.element.css({
                 minHeight: BI.isNumber(o.height) ? (o.height - 8) + "px" : o.height,
                 outline: "none",
-                padding: "0 10px"
-            }).html(o.value);
+                padding: "0 10px",
+                wordWrap: "break-word"
+            }).html(initValue);
 
             if(o.readOnly) {
                 this.elm.element.attr("contentEditable", false);
@@ -161,8 +167,7 @@
             }
             this.instanceDoc = document.defaultView;
             this.elm.element.on("mousedown", BI.bind(this.selected, this));
-            this.elm.element.on("keyup", BI.bind(this.keyDown, this));
-            // this.elm.element.on("keydown", BI.bind(this.keyDown, this));
+            this.elm.element.on("keydown", BI.bind(this.keyDown, this));
             this.elm.element.on("focus", BI.bind(this.selected, this));
             this.elm.element.on("blur", BI.bind(this.blur, this));
             this.elm.element.on("keyup", BI.bind(this.selected, this));
@@ -274,6 +279,13 @@
         },
 
         keyDown: function (e, t) {
+            if (e.keyCode === 8) {
+                var html = this.elm.element.html().toLowerCase().trim();
+                if (html === "<div><br></div>" || html === "<div></div>") {
+                    e.preventDefault()
+                    return;
+                }
+            }
             this.ne.fireEvent("keydown", e);
         },
 
@@ -295,6 +307,19 @@
                 this.isFocused = true;
                 this.elm.element.addClass(prefix + "selected");
             }
+            this.ne.fireEvent("keyup", e);
+
+            if (e.keyCode !== 8) {
+                return;
+            }
+            var newLine;
+            var html = this.elm.element.html().toLowerCase().trim();
+            if (!html || html === '<br>') {
+                newLine = $("<div></div>");
+                this.elm.element.html('');
+                this.elm.element.append(newLine);
+                this.setFocus(newLine[0]);
+            }
             // return false;
         },
 
@@ -376,6 +401,38 @@
             document.execCommand(cmd, false, args);
         },
 
+        initSelection: function (newLine) {
+            var newLineHtml = this._getNewLine();
+            var el = this.elm.element;
+            var children = el.children();
+            if (!children.length) {
+                // 如果编辑器区域无内容，添加一个空行，重新设置选区
+                el.append(newLineHtml);
+                this.initSelection();
+                return;
+            }
+            
+            var last = children.last();
+
+            if (newLine) {
+                // 新增一个空行
+                var html = last.html().toLowerCase();
+                var nodeName = last.nodeName;
+                if ((html !== "<br>" && html !== "<br\/>") || nodeName !== "DIV") {
+                    // 最后一个元素不是空行，添加一个空行，重新设置选区
+                    el.append(newLineHtml);
+                    this.initSelection();
+                    return;
+                }
+            }
+
+            this.setFocus(last[0]);
+        },
+
+        _getNewLine: function () {
+            return "<div><br></div>";
+        },
+
         _isChildOf: function(child, parent) {
             var parentNode;
             if(child && parent) {
@@ -388,6 +445,13 @@
                 }
             }
             return false;
+        },
+
+        _isIE11Below: function() {
+            if (!BI.isIE()) {
+                return false;
+            }
+            return BI.getIEVersion() < 11;
         }
     });
 }());