diff --git a/miniprogram/demoPages/shapePrint/index.js b/miniprogram/demoPages/shapePrint/index.js
index 69af751..8e56018 100644
--- a/miniprogram/demoPages/shapePrint/index.js
+++ b/miniprogram/demoPages/shapePrint/index.js
@@ -504,6 +504,18 @@ Page({
             case 'drawTrapezoid':
                 this.drawTrapezoid(ctx, x, y, size, color, '#333', filled);
                 break;
+            case 'drawCylinder':
+                this.drawCylinder(ctx, x, y, size, color, '#333', filled);
+                break;
+            case 'drawCube':
+                this.drawCube(ctx, x, y, size, color, '#333', filled);
+                break;
+            case 'drawSphere':
+                this.drawSphere(ctx, x, y, size, color, '#333', filled);
+                break;
+            case 'drawCone':
+                this.drawCone(ctx, x, y, size, color, '#333', filled);
+                break;
         }
     },
 
@@ -762,6 +774,192 @@ Page({
         ctx.restore();
     },
 
+    // === 3D形状绘制函数 ===
+
+    // 绘制圆柱体
+    drawCylinder(ctx, x, y, size, fillColor, borderColor, filled = true) {
+        ctx.save();
+        const radius = size * 0.3;
+        const height = size * 0.6;
+
+        // 绘制主体
+        if (filled && fillColor !== 'transparent') {
+            ctx.fillStyle = fillColor;
+            ctx.fillRect(x - radius, y - height / 2, radius * 2, height);
+        }
+
+        // 绘制主体边框
+        ctx.strokeStyle = borderColor;
+        ctx.lineWidth = 3;
+        ctx.beginPath();
+        ctx.moveTo(x - radius, y - height / 2);
+        ctx.lineTo(x - radius, y + height / 2);
+        ctx.moveTo(x + radius, y - height / 2);
+        ctx.lineTo(x + radius, y + height / 2);
+        ctx.stroke();
+
+        // 绘制顶部椭圆
+        ctx.beginPath();
+        ctx.ellipse(x, y - height / 2, radius, radius * 0.3, 0, 0, Math.PI * 2);
+        if (filled && fillColor !== 'transparent') {
+            ctx.fillStyle = fillColor;
+            ctx.fill();
+        }
+        ctx.stroke();
+
+        // 绘制底部椭圆
+        ctx.beginPath();
+        ctx.ellipse(x, y + height / 2, radius, radius * 0.3, 0, 0, Math.PI * 2);
+        if (filled && fillColor !== 'transparent') {
+            ctx.fillStyle = fillColor;
+            ctx.fill();
+        }
+        ctx.stroke();
+
+        ctx.restore();
+    },
+
+    // 绘制正方体
+    drawCube(ctx, x, y, size, fillColor, borderColor, filled = true) {
+        ctx.save();
+        const cubeSize = size * 0.4;
+        const offset = cubeSize * 0.3; // 3D偏移量
+
+        // 绘制后面（右侧面）
+        if (filled && fillColor !== 'transparent') {
+            ctx.fillStyle = fillColor;
+            ctx.globalAlpha = 0.6; // 较暗
+            ctx.fillRect(
+                x - cubeSize / 2 + offset,
+                y - cubeSize / 2 - offset,
+                cubeSize,
+                cubeSize,
+            );
+            ctx.globalAlpha = 1;
+        }
+
+        ctx.strokeStyle = borderColor;
+        ctx.lineWidth = 2;
+        ctx.strokeRect(
+            x - cubeSize / 2 + offset,
+            y - cubeSize / 2 - offset,
+            cubeSize,
+            cubeSize,
+        );
+
+        // 绘制前面（正面）
+        if (filled && fillColor !== 'transparent') {
+            ctx.fillStyle = fillColor;
+            ctx.fillRect(
+                x - cubeSize / 2,
+                y - cubeSize / 2,
+                cubeSize,
+                cubeSize,
+            );
+        }
+
+        ctx.strokeRect(x - cubeSize / 2, y - cubeSize / 2, cubeSize, cubeSize);
+
+        // 绘制连接线
+        ctx.beginPath();
+        // 左上角连接线
+        ctx.moveTo(x - cubeSize / 2, y - cubeSize / 2);
+        ctx.lineTo(x - cubeSize / 2 + offset, y - cubeSize / 2 - offset);
+        // 右上角连接线
+        ctx.moveTo(x + cubeSize / 2, y - cubeSize / 2);
+        ctx.lineTo(x + cubeSize / 2 + offset, y - cubeSize / 2 - offset);
+        // 右下角连接线
+        ctx.moveTo(x + cubeSize / 2, y + cubeSize / 2);
+        ctx.lineTo(x + cubeSize / 2 + offset, y + cubeSize / 2 - offset);
+        ctx.stroke();
+
+        ctx.restore();
+    },
+
+    // 绘制球体
+    drawSphere(ctx, x, y, size, fillColor, borderColor, filled = true) {
+        ctx.save();
+        const radius = size * 0.4;
+
+        // 绘制主体圆形
+        ctx.beginPath();
+        ctx.arc(x, y, radius, 0, Math.PI * 2);
+
+        if (filled && fillColor !== 'transparent') {
+            // 创建径向渐变模拟3D效果
+            const gradient = ctx.createRadialGradient(
+                x - radius * 0.3,
+                y - radius * 0.3,
+                0,
+                x,
+                y,
+                radius,
+            );
+            gradient.addColorStop(0, '#ffffff');
+            gradient.addColorStop(0.3, fillColor);
+            gradient.addColorStop(1, '#000000');
+            ctx.fillStyle = gradient;
+            ctx.fill();
+        }
+
+        ctx.strokeStyle = borderColor;
+        ctx.lineWidth = 3;
+        ctx.stroke();
+
+        // 绘制纬线
+        ctx.strokeStyle = borderColor;
+        ctx.lineWidth = 1;
+        ctx.globalAlpha = 0.5;
+
+        // 水平纬线
+        ctx.beginPath();
+        ctx.ellipse(x, y, radius, radius * 0.3, 0, 0, Math.PI * 2);
+        ctx.stroke();
+
+        // 垂直经线
+        ctx.beginPath();
+        ctx.ellipse(x, y, radius * 0.3, radius, 0, 0, Math.PI * 2);
+        ctx.stroke();
+
+        ctx.restore();
+    },
+
+    // 绘制圆锥体
+    drawCone(ctx, x, y, size, fillColor, borderColor, filled = true) {
+        ctx.save();
+        const radius = size * 0.3;
+        const height = size * 0.6;
+
+        // 绘制圆锥主体
+        ctx.beginPath();
+        ctx.moveTo(x, y - height / 2); // 顶点
+        ctx.lineTo(x - radius, y + height / 2); // 左下
+        ctx.lineTo(x + radius, y + height / 2); // 右下
+        ctx.closePath();
+
+        if (filled && fillColor !== 'transparent') {
+            ctx.fillStyle = fillColor;
+            ctx.fill();
+        }
+
+        ctx.strokeStyle = borderColor;
+        ctx.lineWidth = 3;
+        ctx.stroke();
+
+        // 绘制底部椭圆
+        ctx.beginPath();
+        ctx.ellipse(x, y + height / 2, radius, radius * 0.3, 0, 0, Math.PI * 2);
+
+        if (filled && fillColor !== 'transparent') {
+            ctx.fillStyle = fillColor;
+            ctx.fill();
+        }
+
+        ctx.stroke();
+
+        ctx.restore();
+    },
+
     // 保存到相册
     saveToAlbum() {
         if (!this.data.generatedImage) {
diff --git a/miniprogram/demoPages/shapePrint/index.less b/miniprogram/demoPages/shapePrint/index.less
index 03cb644..336d1b9 100644
--- a/miniprogram/demoPages/shapePrint/index.less
+++ b/miniprogram/demoPages/shapePrint/index.less
@@ -447,8 +447,6 @@
             border-left: none;
             border-radius: 50% 50% 0 0;
             z-index: 2;
-            content: '';
-            display: block;
         }
     }
 
@@ -557,6 +555,216 @@
             box-sizing: border-box;
         }
     }
+
+    // === 3D 形状样式 ===
+
+    /* 圆柱体 */
+    &.shape-icon-cylinder {
+        width: 60rpx;
+        height: 60rpx;
+        border: none;
+        background: transparent;
+        position: relative;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+
+        /* 顶部椭圆 */
+        &::before {
+            content: '';
+            position: absolute;
+            top: 0;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 50rpx;
+            height: 16rpx;
+            background: var(--fill-color, #666);
+            border: 2rpx solid var(--border-color, #333);
+            border-radius: 50%;
+            z-index: 3;
+        }
+
+        /* 主体圆柱 */
+        &::after {
+            content: '';
+            position: absolute;
+            top: 8rpx;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 50rpx;
+            height: 44rpx;
+            background: var(--fill-color, #666);
+            border-left: 2rpx solid var(--border-color, #333);
+            border-right: 2rpx solid var(--border-color, #333);
+            z-index: 1;
+        }
+
+        /* 底部椭圆 */
+        .cylinder-bottom {
+            position: absolute;
+            bottom: 0;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 50rpx;
+            height: 16rpx;
+            background: var(--fill-color, #666);
+            border: 2rpx solid var(--border-color, #333);
+            border-radius: 50%;
+            z-index: 2;
+        }
+    }
+
+    /* 正方体 */
+    &.shape-icon-cube {
+        width: 60rpx;
+        height: 60rpx;
+        border: none;
+        background: transparent;
+        position: relative;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+
+        /* 正面 */
+        &::before {
+            content: '';
+            position: absolute;
+            bottom: 0;
+            left: 0;
+            width: 40rpx;
+            height: 40rpx;
+            background: var(--fill-color, #666);
+            border: 2rpx solid var(--border-color, #333);
+            z-index: 3;
+        }
+
+        /* 顶面 */
+        &::after {
+            content: '';
+            position: absolute;
+            top: 0;
+            right: 0;
+            width: 40rpx;
+            height: 40rpx;
+            background: var(--fill-color, #666);
+            border: 2rpx solid var(--border-color, #333);
+            transform: skewX(-30deg) scaleY(0.6);
+            transform-origin: bottom left;
+            z-index: 2;
+            opacity: 0.8;
+        }
+
+        /* 右面 */
+        .cube-right {
+            position: absolute;
+            bottom: 0;
+            right: 0;
+            width: 20rpx;
+            height: 40rpx;
+            background: var(--fill-color, #666);
+            border: 2rpx solid var(--border-color, #333);
+            border-left: none;
+            transform: skewY(-30deg);
+            transform-origin: bottom left;
+            z-index: 1;
+            opacity: 0.6;
+        }
+    }
+
+    /* 球体 */
+    &.shape-icon-sphere {
+        width: 50rpx;
+        height: 50rpx;
+        border: 2rpx solid var(--border-color, #333);
+        border-radius: 50%;
+        background: var(--fill-color, #666);
+        position: relative;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+
+        /* 高光 */
+        &::before {
+            content: '';
+            position: absolute;
+            top: 12rpx;
+            left: 16rpx;
+            width: 12rpx;
+            height: 8rpx;
+            background: rgba(255, 255, 255, 0.6);
+            border-radius: 50%;
+        }
+
+        /* 纬线 */
+        &::after {
+            content: '';
+            position: absolute;
+            top: 50%;
+            left: 50%;
+            transform: translate(-50%, -50%);
+            width: 46rpx;
+            height: 20rpx;
+            border: 1rpx solid var(--border-color, #333);
+            border-radius: 50%;
+            opacity: 0.3;
+        }
+    }
+
+    /* 圆锥体 */
+    &.shape-icon-cone {
+        width: 60rpx;
+        height: 60rpx;
+        border: none;
+        background: transparent;
+        position: relative;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+
+        /* 圆锥主体 */
+        &::before {
+            content: '';
+            position: absolute;
+            top: 0;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 0;
+            height: 0;
+            border-left: 25rpx solid transparent;
+            border-right: 25rpx solid transparent;
+            border-bottom: 45rpx solid var(--fill-color, #666);
+            z-index: 2;
+        }
+
+        /* 圆锥边框 */
+        &::after {
+            content: '';
+            position: absolute;
+            top: -1rpx;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 0;
+            height: 0;
+            border-left: 26rpx solid transparent;
+            border-right: 26rpx solid transparent;
+            border-bottom: 46rpx solid var(--border-color, #333);
+            z-index: 1;
+        }
+
+        /* 底部椭圆 */
+        .cone-bottom {
+            position: absolute;
+            bottom: 0;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 50rpx;
+            height: 16rpx;
+            background: var(--fill-color, #666);
+            border: 2rpx solid var(--border-color, #333);
+            border-radius: 50%;
+            z-index: 3;
+        }
+    }
 }
 
 .shape-name {
diff --git a/miniprogram/demoPages/shapePrint/index.wxml b/miniprogram/demoPages/shapePrint/index.wxml
index e0e25a4..1c95cf0 100644
--- a/miniprogram/demoPages/shapePrint/index.wxml
+++ b/miniprogram/demoPages/shapePrint/index.wxml
@@ -46,6 +46,22 @@
                     <view
                         class="shape-icon shape-icon-{{item.id}}"
                         style="--fill-color: {{item.fillColor}}; --border-color: #333333;">
+                        <!-- 圆柱体底部 -->
+                        <view
+                            wx:if="{{item.id === 'cylinder'}}"
+                            class="cylinder-bottom"></view>
+                        <!-- 正方体右面 -->
+                        <view
+                            wx:if="{{item.id === 'cube'}}"
+                            class="cube-right"></view>
+                        <!-- 圆锥底部 -->
+                        <view
+                            wx:if="{{item.id === 'cone'}}"
+                            class="cone-bottom"></view>
+                        <!-- 爱心右半圆 -->
+                        <view
+                            wx:if="{{item.id === 'heart'}}"
+                            class="heart-right"></view>
                     </view>
                 </view>
                 <!-- 形状名称 -->
@@ -142,7 +158,24 @@
                     </view>
                     <!-- 形状预览 -->
                     <view class="shape-preview-box">
-                        <view class="shape-icon shape-icon-{{item.id}}"></view>
+                        <view class="shape-icon shape-icon-{{item.id}}">
+                            <!-- 圆柱体底部 -->
+                            <view
+                                wx:if="{{item.id === 'cylinder'}}"
+                                class="cylinder-bottom"></view>
+                            <!-- 正方体右面 -->
+                            <view
+                                wx:if="{{item.id === 'cube'}}"
+                                class="cube-right"></view>
+                            <!-- 圆锥底部 -->
+                            <view
+                                wx:if="{{item.id === 'cone'}}"
+                                class="cone-bottom"></view>
+                            <!-- 爱心右半圆 -->
+                            <view
+                                wx:if="{{item.id === 'heart'}}"
+                                class="heart-right"></view>
+                        </view>
                     </view>
                     <text class="shape-name">{{item.name}}</text>
                 </view>
diff --git a/miniprogram/demoPages/shapePrint/shapes.js b/miniprogram/demoPages/shapePrint/shapes.js
index 90384ff..61316e0 100644
--- a/miniprogram/demoPages/shapePrint/shapes.js
+++ b/miniprogram/demoPages/shapePrint/shapes.js
@@ -84,6 +84,35 @@ const shapes = [
         svg: '<polygon points="30,20 70,20 85,80 15,80" stroke="#333" stroke-width="2" fill="none"/>',
         drawFunction: 'drawTrapezoid',
     },
+    // 新增3D形状
+    {
+        id: 'cylinder',
+        name: '圆柱体',
+        type: '3d-cylinder',
+        svg: '<ellipse cx="50" cy="20" rx="30" ry="8" stroke="#333" stroke-width="2" fill="none"/><rect x="20" y="20" width="60" height="50" stroke="none" fill="none"/><line x1="20" y1="20" x2="20" y2="70" stroke="#333" stroke-width="2"/><line x1="80" y1="20" x2="80" y2="70" stroke="#333" stroke-width="2"/><ellipse cx="50" cy="70" rx="30" ry="8" stroke="#333" stroke-width="2" fill="none"/>',
+        drawFunction: 'drawCylinder',
+    },
+    {
+        id: 'cube',
+        name: '正方体',
+        type: '3d-cube',
+        svg: '<polygon points="20,30 60,30 60,70 20,70" stroke="#333" stroke-width="2" fill="none"/><polygon points="30,20 70,20 70,60 30,60" stroke="#333" stroke-width="2" fill="none"/><line x1="20" y1="30" x2="30" y2="20" stroke="#333" stroke-width="2"/><line x1="60" y1="30" x2="70" y2="20" stroke="#333" stroke-width="2"/><line x1="60" y1="70" x2="70" y2="60" stroke="#333" stroke-width="2"/>',
+        drawFunction: 'drawCube',
+    },
+    {
+        id: 'sphere',
+        name: '球体',
+        type: '3d-sphere',
+        svg: '<circle cx="50" cy="50" r="35" stroke="#333" stroke-width="2" fill="none"/><ellipse cx="50" cy="50" rx="35" ry="15" stroke="#333" stroke-width="1" fill="none" opacity="0.5"/><ellipse cx="50" cy="50" rx="15" ry="35" stroke="#333" stroke-width="1" fill="none" opacity="0.5"/>',
+        drawFunction: 'drawSphere',
+    },
+    {
+        id: 'cone',
+        name: '圆锥体',
+        type: '3d-cone',
+        svg: '<ellipse cx="50" cy="80" rx="30" ry="8" stroke="#333" stroke-width="2" fill="none"/><line x1="20" y1="80" x2="50" y2="20" stroke="#333" stroke-width="2"/><line x1="80" y1="80" x2="50" y2="20" stroke="#333" stroke-width="2"/>',
+        drawFunction: 'drawCone',
+    },
 ];
 
 // 颜色选项