diff --git a/__test__/Room/RoomParse.test.ts b/__test__/Room/RoomParse.test.ts
index e770f28ee..ed007b6a4 100644
--- a/__test__/Room/RoomParse.test.ts
+++ b/__test__/Room/RoomParse.test.ts
@@ -311,3 +311,12 @@ test('圆弧和直线更好的连接', () =>
 
     TestWallCurveParse(walls);
 });
+
+test('墙体厚度导致左侧线长度为0', () =>
+{
+    let d =
+        { "file": [7, "RoomWallLine", 1, 3, 10, 2, 622, 0, 1, 7, 498, [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, 200, 0, 2700, 18168.522308571442, 15251.502132819674, 0, 20009.303680586454, 15251.502132819674, 0, "RoomWallLine", 1, 3, 10, 2, 623, 0, 1, 7, 498, [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, 200, 0, 2700, 20009.303680586454, 15251.502132819674, 0, 20009.303680586454, 15051.502131717672, 0, "RoomWallLine", 1, 3, 10, 2, 624, 0, 1, 7, 498, [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, 200, 0, 2700, 20009.303680586454, 15051.502131717672, 0, 20209.303680586454, 15051.502129513668, 0, "RoomWallLine", 1, 3, 10, 2, 625, 0, 1, 7, 498, [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, 200, 0, 2700, 20209.303680586454, 15051.502129513668, 0, 20209.303680586454, 15251.502132819674, 0, "RoomWallLine", 1, 3, 10, 2, 626, 0, 1, 7, 498, [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, 200, 0, 2700, 20209.303680586454, 15251.502132819674, 0, 21537.951376377354, 15251.502132819674, 0, "RoomWallLine", 1, 3, 10, 2, 627, 0, 1, 7, 498, [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, 200, 0, 2700, 21537.951376377354, 15251.502132819674, 0, 21537.951376377354, 13456.26600336619, 0, "RoomWallLine", 1, 3, 10, 2, 628, 0, 1, 7, 498, [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, 200, 0, 2700, 21537.951376377354, 13456.26600336619, 0, 18168.522308571442, 15251.502132819674, 0], "basePt": { "x": 18121.50004652788, "y": 13368.011219516779, "z": 0 }, "ucs": [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] };
+    let walls = LoadEntityFromFileData<RoomWallLine>(d);
+
+    TestWallCurveParse(walls);
+});
diff --git a/__test__/Room/__snapshots__/RoomParse.test.ts.snap b/__test__/Room/__snapshots__/RoomParse.test.ts.snap
index 418c147c4..9f952407d 100644
--- a/__test__/Room/__snapshots__/RoomParse.test.ts.snap
+++ b/__test__/Room/__snapshots__/RoomParse.test.ts.snap
@@ -766,6 +766,94 @@ Array [
 ]
 `;
 
+exports[`墙体厚度导致左侧线长度为0 1`] = `
+Array [
+  2341.1338341636874,
+  0,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 2`] = `
+Array [
+  1340.4289098663357,
+  0,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 3`] = `
+Array [
+  0,
+  -200,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 4`] = `
+Array [
+  400,
+  -0.000004408007953315973,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 5`] = `
+Array [
+  0,
+  200.00000440800795,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 6`] = `
+Array [
+  1528.6476957909,
+  0,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 7`] = `
+Array [
+  1128.6476957909,
+  0,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 8`] = `
+Array [
+  0,
+  -2061.8245631121354,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 9`] = `
+Array [
+  0,
+  -1528.6476957948325,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 10`] = `
+Array [
+  -3869.7815299545873,
+  2061.824563112137,
+  0,
+]
+`;
+
+exports[`墙体厚度导致左侧线长度为0 11`] = `
+Array [
+  -2869.0766056572356,
+  1528.6476957948307,
+  0,
+]
+`;
+
 exports[`墙厚度导致的破面 1`] = `
 Array [
   -2361.953972758025,
diff --git a/src/DatabaseServices/Room/Entity/Wall/RoomWallLine.ts b/src/DatabaseServices/Room/Entity/Wall/RoomWallLine.ts
index f5f8709ff..c276656f1 100644
--- a/src/DatabaseServices/Room/Entity/Wall/RoomWallLine.ts
+++ b/src/DatabaseServices/Room/Entity/Wall/RoomWallLine.ts
@@ -1,4 +1,4 @@
-import { Box3, BufferGeometry, Face3, Geometry, InstancedInterleavedBuffer, InterleavedBufferAttribute, Line as TLine, LineSegments, MathUtils, Matrix3, Mesh, Object3D, ShapeUtils, Vector2, Vector3 } from "three";
+import { Box3, BufferGeometry, Face3, Geometry, InstancedInterleavedBuffer, InterleavedBufferAttribute, LineSegments, MathUtils, Matrix3, Mesh, Object3D, ShapeUtils, Line as TLine, Vector2, Vector3 } from "three";
 import { Line2 } from "three/examples/jsm/lines/Line2";
 import { LineGeometry } from "three/examples/jsm/lines/LineGeometry";
 import { HostApplicationServices } from "../../../../ApplicationServices/HostApplicationServices";
@@ -9,14 +9,14 @@ import { ObjectSnapMode } from "../../../../Editor/ObjectSnapMode";
 import { Box3Ext } from "../../../../Geometry/Box";
 import { BufferGeometryUtils } from "../../../../Geometry/BufferGeometryUtils";
 import { SubtractRange, Tape } from "../../../../Geometry/ExtrudeMeshGeomBuilder/ExtrudeEdgeGeometry2";
-import { equaln, equalv3, midPoint, MoveMatrix, ZAxis, ZeroVec } from "../../../../Geometry/GeUtils";
+import { MoveMatrix, ZAxis, ZeroVec, equaln, equalv3, midPoint } from "../../../../Geometry/GeUtils";
 import { RenderType } from "../../../../GraphicsSystem/RenderType";
 import { Factory } from "../../../CADFactory";
 import { CADFiler } from "../../../CADFiler";
 import { Curve } from "../../../Entity/Curve";
 import { Line } from "../../../Entity/Line";
 import { GetLineParam } from "../../ParseService/GetCurveParam";
-import { applyMixins, CURVE_FACE_TYPE_KEY, RoomWallBase, WallFaceType } from "./RoomWallBase";
+import { CURVE_FACE_TYPE_KEY, RoomWallBase, WallFaceType, applyMixins } from "./RoomWallBase";
 import { WallSnapMode } from "./WallSnapMode";
 
 const SnapTempLine = new Line;
@@ -440,6 +440,8 @@ export class RoomWallLine extends RoomWallBase
                 {
                     let tapes = [new Tape(0, 1, 0, this._Height)];
                     let curveParam = new GetLineParam(curve);
+                    if (curveParam.Length === 0)
+                        return;
 
                     let holes = this.RealHoles;
                     if (holes.length)
@@ -508,6 +510,8 @@ export class RoomWallLine extends RoomWallBase
                 {
                     let tapes = [new Tape(0, 1, 0, this._Height)];
                     let curveParam = new GetLineParam(curve);
+                    if (curveParam.Length === 0)
+                        return;
 
                     let holes = this.RealHoles;
                     if (holes.length)
diff --git a/src/DatabaseServices/Room/ParseService/RoomWallParse.ts b/src/DatabaseServices/Room/ParseService/RoomWallParse.ts
index d4e2b36ce..730afed96 100644
--- a/src/DatabaseServices/Room/ParseService/RoomWallParse.ts
+++ b/src/DatabaseServices/Room/ParseService/RoomWallParse.ts
@@ -2,7 +2,7 @@ import Flatbush from 'flatbush';
 import { Box3, Vector3 } from "three";
 import { arrayPushArray } from '../../../Common/ArrayExt';
 import { CurveMap, Vertice } from "../../../Geometry/CurveMap";
-import { AsVector2, equalv3, midPoint, SelectNearP } from "../../../Geometry/GeUtils";
+import { AsVector2, SelectNearP, equalv3, midPoint } from "../../../Geometry/GeUtils";
 import { CalcRouteAngle, RegionParse } from "../../../Geometry/RegionParse";
 import { IntersectOption } from "../../../GraphicsSystem/IntersectWith";
 import { EntityEncode2 } from "../../../GraphicsSystem/OffsetPolyline";
@@ -682,6 +682,8 @@ export class RoomWallParse
 
         const Trim = (splitCurve: Curve, offsetCurve: Curve, index: number, type: CurveType) =>
         {
+            if (offsetCurve.Length < 1e-3) return [];
+
             let trim: CurveTrim;
             if (offsetCurve instanceof Line)
             {