diff --git a/src/components/utils/3mf-generator.ts b/src/components/utils/3mf-generator.ts
index 3db2cc3..47a3da2 100644
--- a/src/components/utils/3mf-generator.ts
+++ b/src/components/utils/3mf-generator.ts
@@ -1,6 +1,6 @@
 import * as THREE from "three";
 import { exportTo3MF } from "three-3mf-exporter";
-import type { TraceResult, PathData } from "./image-tracer";
+import type { TraceResult } from "./image-tracer";
 
 export interface ExtrusionSettings {
   size: number; // 模型整体尺寸 (mm)
@@ -57,41 +57,13 @@ export async function generate3MF(
     const layer = traceResult.layers.find((l) => l.id === layerSetting.id);
     if (!layer) continue;
 
-    // 为该图层的所有路径创建形状
-    const shapes: THREE.Shape[] = [];
-
-    for (const path of layer.paths) {
-      if (path.points.length < 2) continue;
-
-      const shape = createShapeFromPath(path, scale, offsetX, offsetY);
-      if (shape) {
-        shapes.push(shape);
-      }
-    }
-
-    if (shapes.length === 0) continue;
-
     // 创建挤压几何体
     const extrudeSettings: THREE.ExtrudeGeometryOptions = {
       depth: layerSetting.thickness,
       curveSegments: 36,
       bevelEnabled: false,
     };
-
-    // 如果有多个形状，创建多个几何体并合并
-    const geometries: THREE.ExtrudeGeometry[] = [];
-    for (const shape of shapes) {
-      const geometry = new THREE.ExtrudeGeometry(shape, extrudeSettings);
-      geometries.push(geometry);
-    }
-
-    // 合并同一图层的几何体
-    let combinedGeometry;
-    if (geometries.length === 1) {
-      combinedGeometry = geometries[0];
-    } else {
-      combinedGeometry = mergeGeometries(geometries);
-    }
+    const geometry: THREE.ExtrudeGeometry = new THREE.ExtrudeGeometry(layer.paths, extrudeSettings);
 
     // 为该图层生成颜色
     const color = generateLayerColor(layerIndex);
@@ -101,7 +73,7 @@ export async function generate3MF(
       roughness: 0.7,
     });
 
-    const mesh = new THREE.Mesh(combinedGeometry, material);
+    const mesh = new THREE.Mesh(geometry, material);
 
     // 设置图层高度（堆叠）
     mesh.position.y = currentHeight;
@@ -134,100 +106,4 @@ export async function generate3MF(
   });
 
   return blob;
-}
-
-/**
- * 从路径数据创建 Three.js 形状
- */
-function createShapeFromPath(
-  path: PathData,
-  scale: number,
-  offsetX: number,
-  offsetY: number
-): THREE.Shape | null {
-  if (path.points.length < 2) return null;
-
-  const shape = new THREE.Shape();
-
-  // 移动到起点
-  const startPoint = path.points[0];
-  shape.moveTo(
-    (startPoint.x + offsetX) * scale,
-    (startPoint.y + offsetY) * scale
-  );
-
-  // 绘制线段到后续点
-  for (let i = 1; i < path.points.length; i++) {
-    const point = path.points[i];
-    shape.lineTo(
-      (point.x + offsetX) * scale,
-      (point.y + offsetY) * scale
-    );
-  }
-
-  // 如果是闭合路径，闭合形状
-  if (path.isClosed) {
-    shape.closePath();
-  }
-
-  return shape;
-}
-
-/**
- * 合并多个几何体
- */
-function mergeGeometries(
-  geometries: THREE.ExtrudeGeometry[]
-): THREE.ExtrudeGeometry {
-  const mergedGeometry = geometries[0].clone();
-
-  for (let i = 1; i < geometries.length; i++) {
-    const geometry = geometries[i];
-
-    const positionAttribute = geometry.getAttribute("position");
-    const normalAttribute = geometry.getAttribute("normal");
-    const uvAttribute = geometry.getAttribute("uv");
-
-    if (positionAttribute) {
-      const positions = mergedGeometry.getAttribute("position");
-      const newPositions = new Float32Array(
-        positions.array.length + positionAttribute.array.length
-      );
-      newPositions.set(positions.array);
-      newPositions.set(positionAttribute.array, positions.array.length);
-      mergedGeometry.setAttribute(
-        "position",
-        new THREE.BufferAttribute(newPositions, 3)
-      );
-    }
-
-    if (normalAttribute) {
-      const normals = mergedGeometry.getAttribute("normal");
-      const newNormals = new Float32Array(
-        normals.array.length + normalAttribute.array.length
-      );
-      newNormals.set(normals.array);
-      newNormals.set(normalAttribute.array, normals.array.length);
-      mergedGeometry.setAttribute(
-        "normal",
-        new THREE.BufferAttribute(newNormals, 3)
-      );
-    }
-
-    if (uvAttribute) {
-      const uvs = mergedGeometry.getAttribute("uv");
-      const newUvs = new Float32Array(
-        uvs.array.length + uvAttribute.array.length
-      );
-      newUvs.set(uvs.array);
-      newUvs.set(uvAttribute.array, uvs.array.length);
-      mergedGeometry.setAttribute(
-        "uv",
-        new THREE.BufferAttribute(newUvs, 2)
-      );
-    }
-  }
-
-  mergedGeometry.computeVertexNormals();
-  return mergedGeometry;
-}
+}
\ No newline at end of file
diff --git a/src/components/utils/image-tracer.ts b/src/components/utils/image-tracer.ts
index 21603e8..6bedfa1 100644
--- a/src/components/utils/image-tracer.ts
+++ b/src/components/utils/image-tracer.ts
@@ -1,4 +1,4 @@
-import { ImageTracer, type TraceData, type OutlinedArea, type SvgLineAttributes, Options } from "@image-tracer-ts/core";
+import { ImageTracer, Options } from "@image-tracer-ts/core";
 //@ts-ignore
 import {SVGLoader, SVGResult} from "three/examples/jsm/loaders/SVGLoader";
 import {Color, ShapePath, Shape} from "three";
@@ -26,12 +26,6 @@ export interface TraceResult {
   layers: TracedLayer[];
 }
 
-interface SvgPath {
-  color: string;
-  d: string;
-  path: PathData;
-}
-
 /**
  * 将图像转换为矢量路径
  * @param image - 要追踪的图片元素