diff --git a/changelog.md b/changelog.md
index 48fe325965..b761e02fd5 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,6 @@
 # 更新日志
 2.0(2020-06)
+- 修复了单选标红combo类setValue为空字符串会标红的问题
 - BI.history提供与注册路由对应的卸载路由方法unRoute
 - 修复了单选标红combo类setValue为空和空数组行为不一致的问题
 - 单选列表支持新增选项
diff --git a/src/case/combo/icontextvaluecombo/combo.icontextvalue.js b/src/case/combo/icontextvaluecombo/combo.icontextvalue.js
index ba3fead5b0..ff29bfc445 100644
--- a/src/case/combo/icontextvaluecombo/combo.icontextvalue.js
+++ b/src/case/combo/icontextvaluecombo/combo.icontextvalue.js
@@ -67,7 +67,7 @@ BI.IconTextValueCombo = BI.inherit(BI.Widget, {
     },
 
     _checkError: function (v) {
-        if(BI.isNull(v) || BI.isEmptyArray(v)) {
+        if(BI.isNull(v) || BI.isEmptyArray(v) || BI.isEmptyString(v)) {
             this.trigger.options.tipType = "success";
             this.element.removeClass("combo-error");
         } else {
diff --git a/src/case/combo/searchtextvaluecombo/combo.searchtextvalue.js b/src/case/combo/searchtextvaluecombo/combo.searchtextvalue.js
index ba6376b039..2875425dfb 100644
--- a/src/case/combo/searchtextvaluecombo/combo.searchtextvalue.js
+++ b/src/case/combo/searchtextvaluecombo/combo.searchtextvalue.js
@@ -124,7 +124,7 @@ BI.SearchTextValueCombo = BI.inherit(BI.Widget, {
     },
 
     _checkError: function (v) {
-        if(BI.isNull(v) || BI.isEmptyArray(v)) {
+        if(BI.isNull(v) || BI.isEmptyArray(v) || BI.isEmptyString(v)) {
             this.trigger.options.tipType = "success";
             this.element.removeClass("combo-error");
         } else {
diff --git a/src/case/combo/textvaluecombo/combo.textvalue.js b/src/case/combo/textvaluecombo/combo.textvalue.js
index 982b263ea3..796ad0196c 100644
--- a/src/case/combo/textvaluecombo/combo.textvalue.js
+++ b/src/case/combo/textvaluecombo/combo.textvalue.js
@@ -62,7 +62,7 @@ BI.TextValueCombo = BI.inherit(BI.Widget, {
     },
 
     _checkError: function (v) {
-        if(BI.isNull(v) || BI.isEmptyArray(v)) {
+        if(BI.isNull(v) || BI.isEmptyArray(v) || BI.isEmptyString(v)) {
             this.trigger.options.tipType = "success";
             this.element.removeClass("combo-error");
         } else {