diff --git a/src/ibp/ibpPan.js b/src/ibp/ibpPan.js
index 47cde4ac2..8aa714191 100644
--- a/src/ibp/ibpPan.js
+++ b/src/ibp/ibpPan.js
@@ -152,14 +152,13 @@ class IbpPan {
 			updateIbpData(elem);
 			const oDevice = this.ibpDevice[code] || deviceFactory(type, elem);
 			const nDevice = deviceFactory(type, Object.assign(oDevice.model || {}, elem));
-			delete this.mapDevice[code];
+			delete this.ibpDevice[code];
 			this.$painter.delete(oDevice);
 			if (!elem._dispose) {
 				this.ibpDevice[code] = nDevice;
 				this.$painter.add(nDevice);
 			}
 		});
-
 		if (this.methods.viewUpdate instanceof Function) { this.methods.viewUpdate(list); }
 	}
 
diff --git a/src/ibp/mouseController.js b/src/ibp/mouseController.js
index 581f6ccfb..39801a24b 100644
--- a/src/ibp/mouseController.js
+++ b/src/ibp/mouseController.js
@@ -28,7 +28,6 @@ class MouseController extends Eventful {
 		this.$zr = ibp.getZr();
 		this.isAllowDragging=ibp.isAllowDragging||false;
 		this.events = ibp.getEvents();
-		this._draggingTarget=null;
 		this._dragging = false;
 		this.initHandler(this.$zr);
 	}
@@ -94,7 +93,7 @@ class MouseController extends Eventful {
 		}
 		const em = new EventModel(e);
 		this.eventTarget = em.eventTarget;
-		if (this.eventTarget._type === deviceType.Background) {
+		if (this.eventTarget && this.eventTarget._type === deviceType.Background) {
 			this.eventTarget.setCursor('pointer');
 		}
 		this._offsetX=e.offsetX;
@@ -121,7 +120,7 @@ class MouseController extends Eventful {
 		this._x = e.offsetX;
 		this._y = e.offsetY;
 		if (this._dragging) {
-			if (this.eventTarget._type === deviceType.Background || !this.isAllowDragging) {
+			if ((this.eventTarget && this.eventTarget._type === deviceType.Background) || !this.isAllowDragging) {
 				this._preventDefaultMouseMove && eventTool.stop(e.event);
 				this.trigger(this.events.__Pan, { dx, dy, oldX, oldY, newX: this._x, newY: this._y });
 				return true;
@@ -135,12 +134,12 @@ class MouseController extends Eventful {
 	}
 
 	mouseup(e) {
-		if (!eventTool.notLeftMouse(e)&&this.isAllowDragging) {
+		if (!eventTool.notLeftMouse(e)&&this.isAllowDragging && this.eventTarget) {
 			this.eventTarget.setModel(e.offsetX - this._offsetX, e.offsetY - this._offsetY);
 			this.eventTarget.dirty();
 			this.eventTarget = '';
 		}
-		if (this.eventTarget._type === deviceType.Background) {
+		if (this.eventTarget && this.eventTarget._type === deviceType.Background) {
 			this.eventTarget.setCursor('default');
 		}
 		this._dragging = false;
diff --git a/src/views/ibp/ibpDraft/ibpEdit/ibpOperate/ibpBg.vue b/src/views/ibp/ibpDraft/ibpEdit/ibpOperate/ibpBg.vue
index 7f5be58bc..024d06f76 100644
--- a/src/views/ibp/ibpDraft/ibpEdit/ibpOperate/ibpBg.vue
+++ b/src/views/ibp/ibpDraft/ibpEdit/ibpOperate/ibpBg.vue
@@ -41,7 +41,13 @@
 
         },
         watch: {
-
+            '$store.state.ibp.rightClickCount': function (val) {
+                const model = this.$store.getters['ibp/updateDeviceData'];
+                if (model._type === 'Background' ){
+                    this.form.bgWidth = model.width;
+                    this.form.bgHeight = model.height;
+                }
+            }
         },
         mounted() {
         },