diff --git a/_server/MotaAction.g4 b/_server/MotaAction.g4
index cdb905c3..bf089962 100644
--- a/_server/MotaAction.g4
+++ b/_server/MotaAction.g4
@@ -2428,20 +2428,21 @@ return code;
 */;
 
 choicesContext
-    :   '子选项' EvalString '图标' IdString? '颜色' ColorString? Colour '出现条件' EvalString? BGNL? Newline action+
+    :   '子选项' EvalString '图标' IdString? '颜色' ColorString? Colour '启用条件' EvalString? '出现条件' EvalString? BGNL? Newline action+
 
 
 /* choicesContext
 tooltip : 选项的选择
 helpUrl : /_docs/#/instruction
-default : ["提示文字:红钥匙","","",""]
+default : ["提示文字:红钥匙","","","",""]
 allIds : ['IdString_0']
 colour : this.subColor
 ColorString_0 = ColorString_0 ? (', "color": ['+ColorString_0+']') : '';
-EvalString_1 = EvalString_1 && (', "condition": "'+EvalString_1+'"')
+EvalString_1 = EvalString_1 && (', "need": "'+EvalString_1+'"');
+EvalString_2 = EvalString_2 && (', "condition": "'+EvalString_2+'"');
 IdString_0 = IdString_0?(', "icon": "'+IdString_0+'"'):'';
 var collapsed=block.isCollapsed()?', "_collapsed": true':'';
-var code = '{"text": "'+EvalString_0+'"'+IdString_0+ColorString_0+EvalString_1+collapsed+', "action": [\n'+action_0+']},\n';
+var code = '{"text": "'+EvalString_0+'"'+IdString_0+ColorString_0+EvalString_1+EvalString_2+collapsed+', "action": [\n'+action_0+']},\n';
 return code;
 */;
 
diff --git a/_server/MotaActionParser.js b/_server/MotaActionParser.js
index 7b8774d6..06ea0f0d 100644
--- a/_server/MotaActionParser.js
+++ b/_server/MotaActionParser.js
@@ -689,7 +689,7 @@ ActionParser.prototype.parseAction = function() {
       for(var ii=data.choices.length-1,choice;choice=data.choices[ii];ii--) {
         choice.color = this.Colour(choice.color);
         text_choices=MotaActionFunctions.xmlText('choicesContext', [
-          choice.text,choice.icon,choice.color,'rgba('+choice.color+')',choice.condition||'',this.insertActionList(choice.action),text_choices],
+          choice.text,choice.icon,choice.color,'rgba('+choice.color+')',choice.need||'',choice.condition||'',this.insertActionList(choice.action),text_choices],
            /* isShadow */false, /*comment*/ null, /*collapsed*/ choice._collapsed);
       }
       if (!this.isset(data.text)) data.text = '';
diff --git a/_server/editor_blocklyconfig.js b/_server/editor_blocklyconfig.js
index 15f90b7c..ddbee57b 100644
--- a/_server/editor_blocklyconfig.js
+++ b/_server/editor_blocklyconfig.js
@@ -108,7 +108,7 @@ editor_blocklyconfig=(function(){
       MotaActionBlocks['confirm_s'].xmlText(),
       MotaActionBlocks['choices_s'].xmlText([
         '选择剑或者盾','流浪者','man',0,MotaActionBlocks['choicesContext'].xmlText([
-          '剑','','',null,'',MotaActionFunctions.actionParser.parseList([{"type": "openDoor", "loc": [3,3]}]),
+          '剑','','',null,'','',MotaActionFunctions.actionParser.parseList([{"type": "openDoor", "loc": [3,3]}]),
         ])
       ]),
     ],
diff --git a/libs/actions.js b/libs/actions.js
index 90752d90..6de7112d 100644
--- a/libs/actions.js
+++ b/libs/actions.js
@@ -974,10 +974,15 @@ actions.prototype._clickAction = function (x, y) {
         if (x >= this.CHOICES_LEFT && x <= this.CHOICES_RIGHT) {
             var topIndex = this.HSIZE - parseInt((choices.length - 1) / 2) + (core.status.event.ui.offset || 0);
             if (y >= topIndex && y < topIndex + choices.length) {
+                var choice = choices[y - topIndex];
+                if (choice.need != null && choice.need != '' && !core.calValue(choice.need)) {
+                    core.drawTip("无法选择此项");
+                    return;
+                }
                 clearTimeout(core.status.event.interval);
                 // 选择
                 core.status.route.push("choices:" + (y - topIndex));
-                core.insertAction(choices[y - topIndex].action);
+                core.insertAction(choice.action);
                 core.doAction();
             }
         }
diff --git a/libs/events.js b/libs/events.js
index c0bf4b80..4e2cf5da 100644
--- a/libs/events.js
+++ b/libs/events.js
@@ -1866,7 +1866,13 @@ events.prototype._action_choices = function (data, x, y, prefix) {
                 setTimeout(function () {
                     core.status.route.push("choices:"+index);
                     if (index != 'none') {
-                        core.insertAction(data.choices[index].action);
+                        // 检查
+                        var choice = data.choices[index];
+                        if (choice.need != null && choice.need != '' && !core.calValue(choice.need)) {
+                            // 无法选择此项：直接忽略
+                        } else {
+                            core.insertAction(choice.action);
+                        }
                     }
                     core.doAction();
                 }, core.status.replay.speed == 24 ? 1 : 750 / Math.max(1, core.status.replay.speed));
diff --git a/libs/ui.js b/libs/ui.js
index 7aeb4019..909c22e7 100644
--- a/libs/ui.js
+++ b/libs/ui.js
@@ -1659,6 +1659,7 @@ ui.prototype._drawChoices_drawChoices = function (choices, isWindowSkin, hPos, v
     core.setFont('ui', this._buildFont(17, true));
     for (var i = 0; i < choices.length; i++) {
         var color = core.arrayToRGBA(choices[i].color || core.status.textAttribute.text);
+        if (choices[i].need != null && choices[i].need != '' && !core.calValue(choices[i].need)) color = '#999999';
         core.setFillStyle('ui', color);
         var offset = this.HPIXEL;
         if (choices[i].icon) {