diff --git a/source/Component/BehaviorPicker/BehaviorPicker.scss b/source/Component/BehaviorPicker/BehaviorPicker.scss
index 7e0889a..5f9b494 100644
--- a/source/Component/BehaviorPicker/BehaviorPicker.scss
+++ b/source/Component/BehaviorPicker/BehaviorPicker.scss
@@ -39,8 +39,11 @@ div.behavior-picker-list {
             i.view-icon {
                 display: none;
             }
+        }
 
-            i.view-icon:hover {
+        div.behavior-picker-line-icon-view:hover {
+            
+            i.view-icon {
                 color: $lt-green;
             }
         }
@@ -57,16 +60,28 @@ div.behavior-picker-list {
             }
         }
 
+        div.behavior-picker-title.is-deleted {
+
+            div {
+                text-decoration: line-through;
+                opacity: 0.6;
+            }
+        }
+        
+        div.behavior-picker-title.behavior-add-line {
+            width: calc(100% - 30px);
+        }
+
         div.behavior-picker-line-delete-view {
             width: 30px;
             height: 100%;
             display: flex;
             justify-content: center;
             align-items: center;
+        }
 
-            i:hover {
-                color: $lt-red;
-            }
+        div.behavior-picker-line-delete-view:hover i {
+            color: $lt-red;
         }
     }
 
diff --git a/source/Component/BehaviorPicker/BehaviorPicker.tsx b/source/Component/BehaviorPicker/BehaviorPicker.tsx
index 92813d5..faab062 100644
--- a/source/Component/BehaviorPicker/BehaviorPicker.tsx
+++ b/source/Component/BehaviorPicker/BehaviorPicker.tsx
@@ -1,77 +1,190 @@
 import { DetailsList } from "@Component/DetailsList/DetailsList";
-import { Component, ReactNode } from "react";
+import { Component, ReactNode, createRef } from "react";
 import { Behavior } from "@Model/Behavior";
 import { Icon } from "@fluentui/react";
 import { useSettingWithEvent, IMixinSettingProps } from "@Context/Setting";
+import { useStatusWithEvent, IMixinStatusProps } from "@Context/Status";
 import { Localization } from "@Component/Localization/Localization";
+import { PickerList } from "@Component/PickerList/PickerList";
 import "./BehaviorPicker.scss";
 
 interface IBehaviorPickerProps {
     behavior: Behavior[];
+    focusBehavior?: Behavior;
+    click?: (behavior: Behavior) => void;
     delete?: (behavior: Behavior) => void;
     action?: (behavior: Behavior) => void;
-    add?: () => void;
+    add?: (behavior: Behavior) => void;
 }
 
+interface IBehaviorPickerState {
+    isPickerListOpen: boolean;
+}
+
+@useStatusWithEvent("behaviorChange")
 @useSettingWithEvent("language")
-class BehaviorPicker extends Component<IBehaviorPickerProps & IMixinSettingProps> {
+class BehaviorPicker extends Component<IBehaviorPickerProps & IMixinSettingProps & IMixinStatusProps> {
+
+    public state = {
+        isPickerListOpen: false
+    }
+
+    private isInnerClick: boolean = false;
+    private clickLineRef = createRef<HTMLDivElement>();
 
     private getData() {
-        let data: Array<{key: string, behavior: Behavior | undefined}> = [];
+        let data: Array<{select: boolean, key: string, behavior: Behavior | undefined}> = [];
         for (let i = 0; i < this.props.behavior.length; i++) {
             data.push({
                 key: this.props.behavior[i].id,
-                behavior: this.props.behavior[i]
+                behavior: this.props.behavior[i],
+                select: this.props.behavior[i].id === this.props.focusBehavior?.id
             })
         }
         data.push({
             key: "@@AddButton_List_Key",
-            behavior: undefined
+            behavior: undefined,
+            select: false
         })
         return data;
     }
 
     private renderLine = (behavior?: Behavior): ReactNode => {
         if (behavior) {
+
+            const titleClassList: string[] = ["behavior-picker-title"];
+            if (this.props.setting) {
+                titleClassList.push(this.props.setting.language);
+            }
+            if (behavior.isDeleted()) {
+                titleClassList.push("is-deleted");
+            }
+
             return <>
                 <div className="behavior-picker-line-color-view">
                     <div style={{ borderLeft: `10px solid ${behavior.color}` }}/>
                 </div>
-                <div className="behavior-picker-line-icon-view">
-                    <Icon iconName={behavior.iconName} className="behavior-icon"/>
-                    <Icon iconName="EditCreate" className="view-icon"/>
+                <div
+                    className="behavior-picker-line-icon-view"
+                    onClick={() => {
+                        this.isInnerClick = true;
+                        this.props.action && this.props.action(behavior);
+                    }}
+                >   
+                    {
+                        behavior.isDeleted() ?
+                            <Icon iconName={behavior.iconName}/>:
+                            <>
+                                <Icon iconName={behavior.iconName} className="behavior-icon"/>
+                                <Icon iconName="EditCreate" className="view-icon"/>
+                            </>
+                    }
                 </div>
-                <div className={`behavior-picker-title ${this.props.setting?.language}`}>
+                <div className={titleClassList.join(" ")}>
                     <div>{behavior.name}</div>
                 </div>
-                <div className="behavior-picker-line-delete-view">
+                <div
+                    className="behavior-picker-line-delete-view"
+                    onClick={() => {
+                        this.isInnerClick = true;
+                        this.props.delete && this.props.delete(behavior);
+                    }}
+                >
                     <Icon iconName="Delete"/>
                 </div>
             </>;
         } else {
+
+            const openPicker = () => {
+                this.isInnerClick = true;
+                this.setState({
+                    isPickerListOpen: true
+                });
+            }
+
             return <>
-                <div className="behavior-picker-line-icon-view">
+                <div
+                    className="behavior-picker-line-icon-view"
+                    onClick={openPicker}
+                >
                     <Icon iconName="Add" className="add-icon"/>
                 </div>
-                <div className={`behavior-picker-title`}>
+                <div
+                    className="behavior-picker-title behavior-add-line"
+                    onClick={openPicker}
+                    ref={this.clickLineRef}
+                >
                     <Localization i18nKey="Behavior.Picker.Add.Button"/>
                 </div>
             </>;
         }
     }
 
-    public render(): ReactNode {
-        return <DetailsList
-            hideCheckBox
-            className="behavior-picker-list"
-            items={this.getData()}
-            columns={[{
-                className: "behavior-picker-line",
-                key: "behavior",
-                render: this.renderLine
-            }]}
+    private getAllData = (): Behavior[] => {
+        if (this.props.status) {
+            let res: Behavior[] = [];
+            for (let i = 0; i < this.props.status.model.behaviorPool.length; i++) {
+
+                let isAdded = false;
+                for (let j = 0; j < this.props.behavior.length; j++) {
+                    if (this.props.status.model.behaviorPool[i].id === this.props.behavior[j].id) {
+                        isAdded = true;
+                        break;
+                    }
+                }
+
+                if (!isAdded) {
+                    res.push(this.props.status.model.behaviorPool[i]);
+                }
+            }
+            return res;
+        } else {
+            return [];
+        }
+    }
+
+    private renderPickerList(): ReactNode {
+        return <PickerList
+            objectList={this.getAllData()}
+            noData="Behavior.Picker.Add.Nodata"
+            target={this.clickLineRef}
+            clickObjectItems={((item) => {
+                if (item instanceof Behavior && this.props.add) {
+                    this.props.add(item);
+                }
+                this.setState({
+                    isPickerListOpen: false
+                })
+            })}
+            dismiss={() => {
+                this.setState({
+                    isPickerListOpen: false
+                });
+            }}
         />
     }
+
+    public render(): ReactNode {
+        return <>
+            <DetailsList
+                hideCheckBox
+                className="behavior-picker-list"
+                items={this.getData()}
+                clickLine={(item) => {
+                    if (!this.isInnerClick && this.props.click && item.behavior) {
+                        this.props.click(item.behavior);
+                    }
+                    this.isInnerClick = false;
+                }}
+                columns={[{
+                    className: "behavior-picker-line",
+                    key: "behavior",
+                    render: this.renderLine
+                }]}
+            />
+            {this.state.isPickerListOpen ? this.renderPickerList() : null}
+        </>
+    }
 }
 
 export { BehaviorPicker };
\ No newline at end of file
diff --git a/source/Component/ObjectPicker/ObjectPicker.tsx b/source/Component/ObjectPicker/ObjectPicker.tsx
index 8670868..f3940b5 100644
--- a/source/Component/ObjectPicker/ObjectPicker.tsx
+++ b/source/Component/ObjectPicker/ObjectPicker.tsx
@@ -8,6 +8,7 @@ import { PickerList, IDisplayItem, getObjectDisplayInfo, IDisplayInfo } from "..
 import { Localization } from "@Component/Localization/Localization";
 import { Icon } from "@fluentui/react";
 import { CtrlObject } from "@Model/CtrlObject";
+import { Behavior } from "@Model/Behavior";
 import "./ObjectPicker.scss";
 
 type IObjectType = Label | Group | Range | CtrlObject;
@@ -80,6 +81,7 @@ class ObjectPicker extends Component<IObjectPickerProps & IMixinStatusProps, IOb
             target={this.pickerTarget}
             objectList={this.getAllOption()}
             clickObjectItems={((item) => {
+                if (item instanceof Behavior) return;
                 if (this.props.valueChange) {
                     this.props.valueChange(item);
                 }
diff --git a/source/Component/PickerList/PickerList.tsx b/source/Component/PickerList/PickerList.tsx
index 9533221..5b2cb3b 100644
--- a/source/Component/PickerList/PickerList.tsx
+++ b/source/Component/PickerList/PickerList.tsx
@@ -1,5 +1,6 @@
 import { AllI18nKeys, Localization } from "@Component/Localization/Localization";
 import { Callout, DirectionalHint, Icon } from "@fluentui/react";
+import { Behavior } from "@Model/Behavior";
 import { CtrlObject } from "@Model/CtrlObject";
 import { Group } from "@Model/Group";
 import { Label } from "@Model/Label";
@@ -7,7 +8,7 @@ import { Range } from "@Model/Range";
 import { Component, ReactNode, RefObject } from "react";
 import "./PickerList.scss";
 
-type IPickerListItem = CtrlObject | Label | Range | Group;
+type IPickerListItem = CtrlObject | Label | Range | Group | Behavior;
 interface IDisplayInfo {
     color: string;
     icon: string;
@@ -75,6 +76,14 @@ function getObjectDisplayInfo(item?: IPickerListItem): IDisplayInfo {
         }
 	}
 
+	if (item instanceof Behavior) {
+		color = item.color;
+		icon = item.iconName;
+		name = item.name;
+		internal = false;
+		allLabel = false;
+	}
+
     if (Array.isArray(color)) {
         color = `rgb(${color[0]},${color[1]},${color[2]})`;
     }
@@ -159,7 +168,7 @@ class PickerList extends Component<IPickerListProps> {
 		return <Callout
 			onDismiss={this.props.dismiss}
 			target={this.props.target}
-			directionalHint={DirectionalHint.topAutoEdge}
+			directionalHint={DirectionalHint.topCenter}
 		>
 			<div className="picker-list-root">
 				{this.props.objectList ? this.props.objectList.map((item) => {
diff --git a/source/Context/Status.tsx b/source/Context/Status.tsx
index 91a2f6b..768adba 100644
--- a/source/Context/Status.tsx
+++ b/source/Context/Status.tsx
@@ -38,6 +38,7 @@ interface IStatusEvent {
     objectChange: void;
     rangeLabelChange: void;
     groupLabelChange: void;
+    groupBehaviorChange: void;
     labelChange: void;
     rangeAttrChange: void;
     labelAttrChange: void;
@@ -192,6 +193,22 @@ class Status extends Emitter<IStatusEvent> {
         }
     }
 
+    public addGroupBehavior(id: ObjectID, val: Behavior) {
+        const group = this.model.getObjectById(id);
+        if (group && group instanceof Group) {
+            group.addBehavior(val);
+            this.emit("groupBehaviorChange");
+        }
+    }
+
+    public deleteGroupBehavior(id: ObjectID, val: Behavior) {
+        const group = this.model.getObjectById(id);
+        if (group && group instanceof Group) {
+            group.deleteBehavior(val);
+            this.emit("groupBehaviorChange");
+        }
+    }
+
     public addGroupLabel(id: ObjectID, val: Label) {
         const group = this.model.getObjectById(id);
         if (group && group instanceof Group) {
diff --git a/source/Localization/EN-US.ts b/source/Localization/EN-US.ts
index ba2cfe8..79d6f1b 100644
--- a/source/Localization/EN-US.ts
+++ b/source/Localization/EN-US.ts
@@ -31,6 +31,7 @@ const EN_US = {
     "Object.List.No.Data": "There are no objects in the model, click the button to create it",
     "Object.Picker.List.No.Data": "There is no model in the model for this option",
     "Behavior.Picker.Add.Button": "Click here to assign behavior to this group",
+    "Behavior.Picker.Add.Nodata": "There is no behavior that can be specified",
     "Panel.Title.Notfound": "{id}",
     "Panel.Info.Notfound": "This panel with id {id} can not found!",
     "Panel.Title.Render.View": "Live preview",
diff --git a/source/Localization/ZH-CN.ts b/source/Localization/ZH-CN.ts
index 8cbe5bb..7f582fc 100644
--- a/source/Localization/ZH-CN.ts
+++ b/source/Localization/ZH-CN.ts
@@ -31,6 +31,7 @@ const ZH_CN = {
     "Object.List.No.Data": "模型中没有任何对象，点击按钮以创建",
     "Object.Picker.List.No.Data": "模型中没有合适此选项的模型",
     "Behavior.Picker.Add.Button": "点击此处以赋予行为到此群",
+    "Behavior.Picker.Add.Nodata": "没有可以被指定的行为",
     "Panel.Title.Notfound": "{id}",
     "Panel.Info.Notfound": "这个编号为 {id} 的面板无法找到!",
     "Panel.Title.Render.View": "实时预览",
diff --git a/source/Model/Group.ts b/source/Model/Group.ts
index 21dcf27..6942210 100644
--- a/source/Model/Group.ts
+++ b/source/Model/Group.ts
@@ -315,8 +315,12 @@ class Group extends CtrlObject {
 	public addBehavior(behavior: Behavior | Behavior[]): this {
 		if (Array.isArray(behavior)) {
 			this.behaviors = this.behaviors.concat(behavior);
+            for (let i = 0; i < behavior.length; i++) {
+                behavior[i].mount(this, this.model);
+            }
 		} else {
 			this.behaviors.push(behavior);
+            behavior.mount(this, this.model);
 		}
 
 		// 按照优先级
@@ -326,6 +330,27 @@ class Group extends CtrlObject {
 		return this;
 	}
 
+    /**
+	 * 删除行为
+	 * @param behavior 添加行为 
+	 */
+	public deleteBehavior(behavior: Behavior): this {
+        
+        let deleteIndex = -1;
+        for (let i = 0; i < this.behaviors.length; i++) {
+            if (this.behaviors[i].id === behavior.id) {
+                deleteIndex = i;
+            }
+        }
+
+        if (deleteIndex >= 0) {
+            this.behaviors[deleteIndex].unmount(this, this.model);
+            this.behaviors.splice(deleteIndex, 1);
+        }
+
+		return this;
+	}
+
 	/**
      * 执行行为影响
 	 * @param
@@ -333,7 +358,11 @@ class Group extends CtrlObject {
 	public runner(t: number, effectType: "finalEffect" | "effect" | "afterEffect" ): void {
 		this.individuals.forEach((individual) => {
 			for(let j = 0; j < this.behaviors.length; j++) {
-				this.behaviors[j][effectType](individual, this, this.model, t);
+                if (this.behaviors[j].isDeleted()) {
+                    continue;
+                } else {
+                    this.behaviors[j][effectType](individual, this, this.model, t);
+                }
 			}
 		});
 	}
diff --git a/source/Panel/GroupDetails/GroupDetails.tsx b/source/Panel/GroupDetails/GroupDetails.tsx
index baa824b..5108e95 100644
--- a/source/Panel/GroupDetails/GroupDetails.tsx
+++ b/source/Panel/GroupDetails/GroupDetails.tsx
@@ -25,7 +25,10 @@ const allOption: IDisplayItem[] = [
     {nameKey: "Common.Attr.Key.Generation.Mod.Range", key: GenMod.Range}
 ];
 
-@useStatusWithEvent("groupAttrChange", "groupLabelChange", "focusObjectChange")
+@useStatusWithEvent(
+    "groupAttrChange", "groupLabelChange", "focusObjectChange",
+    "focusBehaviorChange", "behaviorChange", "groupBehaviorChange"
+)
 class GroupDetails extends Component<IGroupDetailsProps & IMixinStatusProps> {
 
 	private renderFrom(group: Group) {
@@ -113,6 +116,19 @@ class GroupDetails extends Component<IGroupDetailsProps & IMixinStatusProps> {
 
             <BehaviorPicker
                 behavior={group.behaviors}
+                focusBehavior={this.props.status?.focusBehavior}
+                click={(behavior) => {
+                    this.props.status?.setBehaviorObject(behavior);
+                }}
+                action={(behavior) => {
+                    this.props.status?.setBehaviorObject(behavior);
+                }}
+                delete={(behavior) => {
+                    this.props.status?.deleteGroupBehavior(group.id, behavior);
+                }}
+                add={(behavior) => {
+                    this.props.status?.addGroupBehavior(group.id, behavior);
+                }}
             />
 
             <Message i18nKey="Common.Attr.Title.Individual.Generation" isTitle/>