diff --git a/__test__/FileSystem/__snapshots__/file.test.ts.snap b/__test__/FileSystem/__snapshots__/file.test.ts.snap
index f832feabc..6a5dbf5b3 100644
--- a/__test__/FileSystem/__snapshots__/file.test.ts.snap
+++ b/__test__/FileSystem/__snapshots__/file.test.ts.snap
@@ -1,8 +1,8 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`changev 1`] = `"[11,101,1,2,1,0,0,1,\\"\\",2,2,0,0,1,\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[2,3,4],[0,0,0],2,4,0,0,4,0,2,3,0,0,4,0,0,0,0,1,0,1,\\"CommandHistoryRecord\\",1,\\"\\",2,2,1,\\"HistorycRecord\\",1,\\"RemoveObjectData\\",1,0,\\"CreateObjectData\\",1,[\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[0,0,0],[0,0,0]],\\"\\",100,1,\\"ObjectAllDataHistoryRecord\\",1,1,\\"AllObjectData\\",1,[10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[0,0,0],[0,0,0]],\\"\\",\\"\\",100,2,5,0,0,0,1,2,6,0,0,0,1,2,7,0,0,1,\\"\\",2,8,0,0,0,2,9,0,0,0,1,2,10,0,0,1,\\"\\",2,11,0,0,0,0,1,2,12,0,0,4,0,0,null]"`;
+exports[`changev 1`] = `"[11,101,1,2,1,0,0,1,\\"\\",2,2,0,0,1,\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[2,3,4],[0,0,0],2,4,0,0,5,0,2,3,0,0,5,0,0,0,0,0,1,0,1,\\"CommandHistoryRecord\\",1,\\"\\",2,2,1,\\"HistorycRecord\\",1,\\"RemoveObjectData\\",1,0,\\"CreateObjectData\\",1,[\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[0,0,0],[0,0,0]],\\"\\",100,1,\\"ObjectAllDataHistoryRecord\\",1,1,\\"AllObjectData\\",1,[10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[0,0,0],[0,0,0]],\\"\\",\\"\\",100,2,5,0,0,0,1,2,6,0,0,0,1,2,7,0,0,1,\\"\\",2,8,0,0,0,2,9,0,0,0,1,2,10,0,0,1,\\"\\",2,11,0,0,0,0,1,2,12,0,0,5,0,0,null]"`;
 
-exports[`创建 修改 撤销撤销  重做重做  撤销  重做 1`] = `"[11,101,1,2,1,0,0,1,\\"\\",2,2,0,0,1,\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[1,2,3],[0,0,0],2,4,0,0,4,0,2,3,0,0,4,0,0,0,0,1,0,1,\\"CommandHistoryRecord\\",1,\\"\\",1,2,1,\\"HistorycRecord\\",1,\\"RemoveObjectData\\",1,0,\\"CreateObjectData\\",1,[\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[1,2,3],[0,0,0]],\\"\\",2,5,0,0,0,1,2,6,0,0,0,1,2,7,0,0,1,\\"\\",2,8,0,0,0,2,9,0,0,0,1,2,10,0,0,1,\\"\\",2,11,0,0,0,0,1,2,12,0,0,4,0,0,null]"`;
+exports[`创建 修改 撤销撤销  重做重做  撤销  重做 1`] = `"[11,101,1,2,1,0,0,1,\\"\\",2,2,0,0,1,\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[1,2,3],[0,0,0],2,4,0,0,5,0,2,3,0,0,5,0,0,0,0,0,1,0,1,\\"CommandHistoryRecord\\",1,\\"\\",1,2,1,\\"HistorycRecord\\",1,\\"RemoveObjectData\\",1,0,\\"CreateObjectData\\",1,[\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[1,2,3],[0,0,0]],\\"\\",2,5,0,0,0,1,2,6,0,0,0,1,2,7,0,0,1,\\"\\",2,8,0,0,0,2,9,0,0,0,1,2,10,0,0,1,\\"\\",2,11,0,0,0,0,1,2,12,0,0,5,0,0,null]"`;
 
 exports[`创建 修改 撤销撤销  重做重做  撤销  重做 2`] = `"[\\"HistoricManage\\",1,0,1,\\"CommandHistoryRecord\\",1,\\"\\",1,2,1,\\"HistorycRecord\\",1,\\"RemoveObjectData\\",1,0,\\"CreateObjectData\\",1,[\\"Line\\",10,2,100,0,1,7,0,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],0,0,1,1,[1,2,3],[0,0,0]],\\"\\"]"`;
 
diff --git a/__test__/FileSystem/__snapshots__/wblockClone.test.ts.snap b/__test__/FileSystem/__snapshots__/wblockClone.test.ts.snap
index cb44c28b2..28d5c7135 100644
--- a/__test__/FileSystem/__snapshots__/wblockClone.test.ts.snap
+++ b/__test__/FileSystem/__snapshots__/wblockClone.test.ts.snap
@@ -20,7 +20,7 @@ Array [
   4,
   0,
   0,
-  4,
+  5,
   1,
   "TextureTableRecord",
   2,
@@ -42,7 +42,7 @@ Array [
   3,
   0,
   0,
-  4,
+  5,
   1,
   "PhysicalMaterialRecord",
   2,
@@ -106,6 +106,7 @@ Array [
   0,
   0,
   0,
+  0,
   1,
   -1,
   0,
@@ -155,7 +156,7 @@ Array [
   12,
   0,
   0,
-  4,
+  5,
   0,
   0,
   null,
@@ -182,7 +183,7 @@ Array [
   4,
   0,
   0,
-  4,
+  5,
   2,
   "TextureTableRecord",
   2,
@@ -220,7 +221,7 @@ Array [
   3,
   0,
   0,
-  4,
+  5,
   2,
   "PhysicalMaterialRecord",
   2,
@@ -343,6 +344,7 @@ Array [
   0,
   0,
   0,
+  0,
   1,
   -1,
   0,
@@ -392,7 +394,7 @@ Array [
   12,
   0,
   0,
-  4,
+  5,
   0,
   0,
   null,
@@ -419,7 +421,7 @@ Array [
   4,
   0,
   0,
-  4,
+  5,
   1,
   "TextureTableRecord",
   2,
@@ -441,7 +443,7 @@ Array [
   3,
   0,
   0,
-  4,
+  5,
   1,
   "PhysicalMaterialRecord",
   2,
@@ -505,6 +507,7 @@ Array [
   0,
   0,
   0,
+  0,
   1,
   -1,
   0,
@@ -554,7 +557,7 @@ Array [
   12,
   0,
   0,
-  4,
+  5,
   0,
   0,
   null,
diff --git a/src/ApplicationServices/HostApplicationServices.ts b/src/ApplicationServices/HostApplicationServices.ts
index 2aafc39b4..0dc72f4f4 100644
--- a/src/ApplicationServices/HostApplicationServices.ts
+++ b/src/ApplicationServices/HostApplicationServices.ts
@@ -10,6 +10,7 @@ export class IHostApplicationServices
     DefaultMeshMaterial?: MeshBasicMaterial | MeshStandardMaterial;
     DefaultFloorMaterial?: MeshBasicMaterial | MeshStandardMaterial;
     DefaultWallMaterial?: MeshBasicMaterial | MeshStandardMaterial;
+    DefaultBulkheadCeilingMaterial?: MeshBasicMaterial | MeshStandardMaterial;
 
     IsRoomEntityVisible = true;//室内实体可见
 
@@ -86,7 +87,6 @@ export class IHostApplicationServices
         checkSealType: "1",
         sealMaxValue: 10,//封边最大值
         sealValues: ''//封边值列表
-
     };
 
     @ProxyValue viewSize = {
diff --git a/src/DatabaseServices/Database.ts b/src/DatabaseServices/Database.ts
index bfc5f78d1..6f018ac16 100644
--- a/src/DatabaseServices/Database.ts
+++ b/src/DatabaseServices/Database.ts
@@ -158,6 +158,7 @@ export class Database
         HostApplicationServices.DefaultMeshMaterial = (this.MaterialTable.CurBoardMtl?.Object as PhysicalMaterialRecord)?.Material ?? this.DefaultMaterial.Material;
         HostApplicationServices.DefaultWallMaterial = (this.MaterialTable.CurWallMtl?.Object as PhysicalMaterialRecord)?.Material ?? this.DefaultMaterial.Material;
         HostApplicationServices.DefaultFloorMaterial = (this.MaterialTable.CurFloorMtl?.Object as PhysicalMaterialRecord)?.Material ?? this.DefaultMaterial.Material;
+        HostApplicationServices.DefaultBulkheadCeilingMaterial = (this.MaterialTable.CurBulkCeilingFaceMaterial?.Object as PhysicalMaterialRecord)?.Material ?? this.DefaultMaterial.Material;
 
         HostApplicationServices.CurrentDimStyle = this.DimStyleTable.Current;
     }
diff --git a/src/DatabaseServices/MaterialTable.ts b/src/DatabaseServices/MaterialTable.ts
index 8d969b1f6..c3e0ba647 100644
--- a/src/DatabaseServices/MaterialTable.ts
+++ b/src/DatabaseServices/MaterialTable.ts
@@ -10,11 +10,12 @@ export class MaterialTable extends SymbolTable
     @observable protected _CurFloorMtl: ObjectId;//默认地板材质
     @observable protected _CurWallMtl: ObjectId;//默认墙体材质
     @observable protected _CurDrawMtl: ObjectId;//默认实体材质
+    @observable protected _CurBulkCeilingFaceMaterial: ObjectId;//吊顶底面默认材质
 
     get CurFloorMtl() { return this._CurFloorMtl; }
     get CurWallMtl() { return this._CurWallMtl; }
     get CurBoardMtl() { return this._CurDrawMtl; }
-
+    get CurBulkCeilingFaceMaterial() { return this._CurBulkCeilingFaceMaterial; }
 
     set CurFloorMtl(id)
     {
@@ -45,6 +46,16 @@ export class MaterialTable extends SymbolTable
             HostApplicationServices.DefaultMeshMaterial = (id.Object as PhysicalMaterialRecord).Material;
     }
 
+    set CurBulkCeilingFaceMaterial(id)
+    {
+        if (id === this._CurBulkCeilingFaceMaterial) return;
+        this.WriteAllObjectRecord();
+        this._CurBulkCeilingFaceMaterial = id;
+
+        if (this._db && this._db.IsDefaultDatabase)
+            HostApplicationServices.DefaultBulkheadCeilingMaterial = (id.Object as PhysicalMaterialRecord).Material;
+    }
+
     get Materials()
     {
         return this.Symbols as Map<string, PhysicalMaterialRecord>;
@@ -90,7 +101,10 @@ export class MaterialTable extends SymbolTable
         }
 
         if (this._FileVer > 3)
-            this._CurDrawMtl = file.ReadHardObjectId();
+            this._CurDrawMtl = file.ReadObjectId();
+
+        if (this._FileVer > 4)
+            this._CurBulkCeilingFaceMaterial = file.ReadObjectId();
     }
 
     //对象将自身数据写入到文件.
@@ -100,8 +114,8 @@ export class MaterialTable extends SymbolTable
 
         file.WriteObjectId(this._CurFloorMtl);
         file.WriteObjectId(this._CurWallMtl);
-
         file.WriteObjectId(this._CurDrawMtl);
+        file.WriteObjectId(this._CurBulkCeilingFaceMaterial);
     }
     //#endregion
 }
diff --git a/src/DatabaseServices/Room/Entity/Ceiling/BulkheadCeiling.ts b/src/DatabaseServices/Room/Entity/Ceiling/BulkheadCeiling.ts
index 076172eb3..4fc6a7617 100644
--- a/src/DatabaseServices/Room/Entity/Ceiling/BulkheadCeiling.ts
+++ b/src/DatabaseServices/Room/Entity/Ceiling/BulkheadCeiling.ts
@@ -1,6 +1,7 @@
 import { BufferAttribute, BufferGeometry, Float32BufferAttribute, InstancedInterleavedBuffer, InterleavedBufferAttribute, Intersection, LineSegments, Material, Mesh, Object3D, ShapeBufferGeometry, Vector3 } from "three";
 import { Line2 } from "three/examples/jsm/lines/Line2";
 import { LineGeometry } from "three/examples/jsm/lines/LineGeometry";
+import { HostApplicationServices } from "../../../../ApplicationServices/HostApplicationServices";
 import { ColorMaterial } from "../../../../Common/ColorPalette";
 import { DisposeThreeObj, Object3DRemoveAll } from "../../../../Common/Dispose";
 import { BufferGeometryUtils } from "../../../../Geometry/BufferGeometryUtils";
@@ -79,6 +80,13 @@ export class BulkheadCeiling extends Entity
 
     @AutoRecord RelativeRoomFlatTop: ObjectId<RoomFlatBase>;
 
+    get MeshMaterial(): Material
+    {
+        if (this._MaterialId && this._MaterialId.Object)
+            return (<PhysicalMaterialRecord>this._MaterialId.Object).Material;
+        return HostApplicationServices.DefaultBulkheadCeilingMaterial;
+    }
+
     private _EdgeGeometrys: BufferGeometry[];
     get EdgeGeometrys(): BufferGeometry[]
     {
@@ -303,7 +311,7 @@ export class BulkheadCeiling extends Entity
             // 单一绘制对象 TODO:因为没有实现材质槽 所以暂时不用这个
             // obj.add(new Mesh(this.MeshGeomtry2, this.Materials2));
 
-            obj.add(new Mesh(this.FaceGeometry, (this.Material?.Object as PhysicalMaterialRecord)?.Material ?? this.MeshMaterial));
+            obj.add(new Mesh(this.FaceGeometry, this.MeshMaterial));
 
             for (let meshGeo of this.MeshGeometry)
                 obj.add(new Mesh(meshGeo, this.GetMaterials(this._GemoIdMap.get(meshGeo.id))));
diff --git a/src/DatabaseServices/SymbolTable.ts b/src/DatabaseServices/SymbolTable.ts
index 359d19123..9885b96db 100644
--- a/src/DatabaseServices/SymbolTable.ts
+++ b/src/DatabaseServices/SymbolTable.ts
@@ -106,7 +106,7 @@ export class SymbolTable extends CADObject
     WriteFile(file: CADFiler)
     {
         super.WriteFile(file);
-        file.Write(4);
+        file.Write(5);
         file.Write(this.Symbols.size);
         for (let [key, record] of this.Symbols)
         {
diff --git a/src/UI/Components/ToolBar/ModifyModel/RoomFlatTopParams.tsx b/src/UI/Components/ToolBar/ModifyModel/RoomFlatTopParams.tsx
index abe28c53a..1d4231908 100644
--- a/src/UI/Components/ToolBar/ModifyModel/RoomFlatTopParams.tsx
+++ b/src/UI/Components/ToolBar/ModifyModel/RoomFlatTopParams.tsx
@@ -5,6 +5,7 @@ import { Matrix4, Vector3 } from "three";
 import { SelectExtrudeContour, selectOutlinePosition } from "../../../../Add-on/DrawBoard/DrawSpecialShapeBoardTool";
 import { ViewChange } from "../../../../Add-on/ViewChange";
 import { app } from "../../../../ApplicationServices/Application";
+import { HostApplicationServices } from "../../../../ApplicationServices/HostApplicationServices";
 import { MaterialUrls } from "../../../../Common/HostUrl";
 import { NormalMatrix } from "../../../../Common/Matrix4Utils";
 import { DirectoryId, PostJson, RequestStatus } from "../../../../Common/Request";
@@ -16,6 +17,7 @@ import { Contour } from "../../../../DatabaseServices/Contour";
 import { Database } from "../../../../DatabaseServices/Database";
 import { Curve } from "../../../../DatabaseServices/Entity/Curve";
 import { Polyline } from "../../../../DatabaseServices/Entity/Polyline";
+import { DefaultParamMap, SetMaterialParams } from "../../../../DatabaseServices/IMaterialDefaultParam";
 import { ObjectId } from "../../../../DatabaseServices/ObjectId";
 import { PhysicalMaterialRecord } from "../../../../DatabaseServices/PhysicalMaterialRecord";
 import { BulkheadCeiling, BulkheadCeiling_ContourType } from "../../../../DatabaseServices/Room/Entity/Ceiling/BulkheadCeiling";
@@ -51,6 +53,34 @@ interface ContourData
 @observer
 export default class RoomFlatTopParams extends Component<RoomBaseParamsProps, {}>
 {
+    //获取吊顶地面面材质 默认乳胶漆
+    SetBulkCeilingFaceDefaultMaterial()
+    {
+        if (!app.Database.MaterialTable.CurBulkCeilingFaceMaterial)
+        {
+            for (let [, mtl] of app.Database.MaterialTable.Materials)
+            {
+                if (mtl.type === "乳胶漆")
+                {
+                    app.Database.MaterialTable.CurBulkCeilingFaceMaterial = mtl.Id;
+                    break;
+                }
+            }
+
+            if (!app.Database.MaterialTable.CurBulkCeilingFaceMaterial)
+            {
+                let mtl = new PhysicalMaterialRecord;
+                SetMaterialParams(mtl, DefaultParamMap.乳胶漆);
+                mtl.type = "乳胶漆";
+                mtl.Name = "乳胶漆";
+                mtl.Update();
+                app.Database.MaterialTable.Add(mtl);
+                app.Database.MaterialTable.CurBulkCeilingFaceMaterial = mtl.Id;
+                HostApplicationServices.DefaultBulkheadCeilingMaterial = mtl.Material;
+            }
+        }
+    }
+
     //提取天花板轮廓
     _PickUpModelingOnFlatTop = async () =>
     {
@@ -172,7 +202,9 @@ export default class RoomFlatTopParams extends Component<RoomBaseParamsProps, {}
             let config = new DialogUserConfig(contourStore, BoardModalType.BulkheadCeilingContour);
             await config.LoadAndInitConfig();
 
+            this.SetBulkCeilingFaceDefaultMaterial();
             let bulkheadCeiling = new BulkheadCeiling();
+            bulkheadCeiling.SetMaterialAtSlot(app.Database.MaterialTable.CurBulkCeilingFaceMaterial, 0);
 
             let matrix = new Matrix4().setPosition(this.props.roomFlatTopEnt.BoundingBox.min.sub(useCurves[0].BoundingBox.min));
             matrix.multiply(new Matrix4().setPosition(0, 0, -bulkheadCeiling.Height));