diff --git a/frame.js b/frame.js
index 6d4ed721..36c7b7fb 100644
--- a/frame.js
+++ b/frame.js
@@ -195,7 +195,14 @@ Volcanos("onappend", {help: "渲染引擎", list: [], _init: function(can, meta,
 					_list.push(mdb.PREV, mdb.NEXT)
 					break
 				default:
-					var item = can.core.SplitInput(list[i], html.BUTTON); item.action && (function() {
+					var item = can.core.SplitInput(list[i], html.BUTTON);
+					if (item.type == html.SELECT) {
+						item._init = function(target) {
+							target.value = item.value
+							target.onchange = function(event) { can.run(event) }
+						}
+					}
+					item.action && (function() {
 						item._init = function(target) { can.onappend.figure(can, item, target) }
 					})(), item.type == html.BUTTON? _list.push(list[i]): _list.push(item)
 			}
diff --git a/lib/core.js b/lib/core.js
index ec473ec2..025759ca 100644
--- a/lib/core.js
+++ b/lib/core.js
@@ -182,7 +182,18 @@ Volcanos("core", {help: "数据结构",
 					switch (ls[i]) {
 						case ":": res[mdb.TYPE] = ls[i+1]; break
 						case "=":
-							if (res[mdb.TYPE] == html.SELECT) { res["values"] = this.Split(ls[i+1]) } else { res["value"] = ls[i+1] }
+							if (res[mdb.TYPE] == html.SELECT) {
+								res.values = this.Split(ls[i+1])
+								for (var i = 1; i < res.values.length; i++) {
+									if (res.values[0] == res.values[i]) {
+										res.value = res.values[0]
+										res.values = res.values.slice(1)
+										break
+									}
+								}
+							} else {
+								res.value = ls[i+1]
+							}
 							break
 						case "@": res[ctx.ACTION] = ls[i+1]; break
 					}