diff --git a/src/base/combination/combo.js b/src/base/combination/combo.js
index 543d5fed73..1e63ec054f 100644
--- a/src/base/combination/combo.js
+++ b/src/base/combination/combo.js
@@ -12,7 +12,7 @@
                 attributes: {
                     tabIndex: -1
                 },
-                trigger: "click",
+                trigger: "click", // click || hover || click-hover || ""
                 toggle: true,
                 direction: "bottom", // top||bottom||left||right||top,left||top,right||bottom,left||bottom,right||right,innerRight||right,innerLeft||innerRight||innerLeft
                 logic: {
@@ -182,62 +182,16 @@
                         });
                         break;
                     case "click-hover":
-                    case "click-blur":
-                        // IE走click-hover逻辑
-                        if (BI.isIE() || ev === "click-hover") {
-                            var debounce = BI.debounce(function (e) {
-                                if (self.combo.element.__isMouseInBounds__(e)) {
-                                    if (self.isEnabled() && self.isValid() && self.combo.isEnabled() && self.combo.isValid()) {
-                                        // if (self.isViewVisible()) {
-                                        //     return;
-                                        // }
-                                        self._popupView(e);
-                                        if (self.isViewVisible()) {
-                                            self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, "", self.combo);
-                                            self.fireEvent(BI.Combo.EVENT_EXPAND);
-                                        }
-                                    }
-                                }
-                            }, BI.EVENT_RESPONSE_TIME, {
-                                "leading": true,
-                                "trailing": false
-                            });
-                            self.element.off("click." + self.getName()).on("click." + self.getName(), function (e) {
-                                debounce(e);
-                                st(e);
-                            });
-                            self.element.on("mouseleave." + self.getName(), function (e) {
-                                if (self.popupView) {
-                                    self.popupView.element.on("mouseenter." + self.getName(), function (e) {
-                                        enterPopup = true;
-                                        self.popupView.element.on("mouseleave." + self.getName(), function (e) {
-                                            hide(e);
-                                        });
-                                        self.popupView.element.off("mouseenter." + self.getName());
-                                    });
-                                    BI.defer(function () {
-                                        if (!enterPopup) {
-                                            hide(e);
-                                        }
-                                    }, 50);
-                                }
-                            });
-                            break;
-                        }
-
                         var debounce = BI.debounce(function (e) {
                             if (self.combo.element.__isMouseInBounds__(e)) {
                                 if (self.isEnabled() && self.isValid() && self.combo.isEnabled() && self.combo.isValid()) {
-                                    // if (!o.toggle && self.isViewVisible()) {
+                                    // if (self.isViewVisible()) {
                                     //     return;
                                     // }
-                                    o.toggle ? self._toggle(e) : self._popupView(e);
+                                    self._popupView(e);
                                     if (self.isViewVisible()) {
                                         self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, "", self.combo);
                                         self.fireEvent(BI.Combo.EVENT_EXPAND);
-                                    } else {
-                                        self.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.COLLAPSE, "", self.combo);
-                                        self.fireEvent(BI.Combo.EVENT_COLLAPSE);
                                     }
                                 }
                             }
@@ -247,18 +201,23 @@
                         });
                         self.element.off("click." + self.getName()).on("click." + self.getName(), function (e) {
                             debounce(e);
-                            try {
-                                self.element[0].focus();
-                            } catch (e) {
-
-                            }
                             st(e);
                         });
-                        self.element.off("blur." + self.getName()).on("blur." + self.getName(), function (e) {
-                            if (self.isViewVisible()) {
-                                self._hideView(e);
+                        self.element.on("mouseleave." + self.getName(), function (e) {
+                            if (self.popupView) {
+                                self.popupView.element.on("mouseenter." + self.getName(), function (e) {
+                                    enterPopup = true;
+                                    self.popupView.element.on("mouseleave." + self.getName(), function (e) {
+                                        hide(e);
+                                    });
+                                    self.popupView.element.off("mouseenter." + self.getName());
+                                });
+                                BI.delay(function () {
+                                    if (!enterPopup) {
+                                        hide(e);
+                                    }
+                                }, 50);
                             }
-                            st(e);
                         });
                         break;
                 }
@@ -353,7 +312,7 @@
             this._assertPopupViewRender();
             this.fireEvent(BI.Combo.EVENT_BEFORE_POPUPVIEW);
             // popupVisible是为了获取其宽高, 放到可视范围之外以防止在IE下闪一下
-            this.popupView.css({left: -999999999, top: -99999999});
+            this.popupView.css({ left: -999999999, top: -99999999 });
             this.popupView.visible();
             BI.each(needHideWhenAnotherComboOpen, function (i, combo) {
                 if (i !== self.getName()) {