diff --git a/src/worker.js b/src/worker.js
index 88ed5be..091d28f 100644
--- a/src/worker.js
+++ b/src/worker.js
@@ -6,17 +6,48 @@ export default {
 			return new Response(`curl -fsSL ${url.origin}/install.sh | sh -
 iwr ${url.origin}/install.ps1 -useb | iex
 
+# 常用命令
 pnpm env use --global lts
 pnpm config get registry
 pnpm config set registry https://registry.npmmirror.com
 `);
 		}
 
+		// 2. 代理请求
 		let response = await fetch(`http://get.pnpm.io${url.pathname}`);
 		let text = await response.text();
+
+		// 3. GitHub 加速替换
 		text = text.replace(/https:\/\/github.com/g, 'https://ghfast.top/https://github.com');
 		text = text.replace('Downloading pnpm from GitHub', 'Downloading pnpm from GitHub (via Cloudflare)');
 		text = text.replace('Downloading pnpm', 'Downloading pnpm (via Cloudflare)');
+
+		// 4. 【核心修改】针对 PowerShell 脚本 (install.ps1)
+		if (url.pathname.endsWith('.ps1')) {
+			// --- 修改 A: 修复 ARM64 判断逻辑 ---
+			const originalLogicRegex =
+				/if \(\$platform -eq 'win'\)\s*\{\s*if \(\[System\.Environment\]::Is64BitOperatingSystem -eq \$true\)\s*\{\s*\$architecture = 'x64'/;
+
+			// 使用 elseif 结构，优先判断环境变量是否为 ARM64
+			const patchedLogic = `if ($platform -eq 'win') {
+  if ($env:PROCESSOR_ARCHITECTURE -eq 'ARM64') {
+    $architecture = 'arm64'
+  } elseif ([System.Environment]::Is64BitOperatingSystem -eq $true) {
+    $architecture = 'x64'`;
+
+			text = text.replace(originalLogicRegex, patchedLogic);
+
+			// --- 修改 B: 插入 Debug 打印 ---
+			// 这里的注入点选择在脚本判断完所有架构之后，检查 platform 是否为空之前
+			// 这样能确保打印出最终判定结果
+			const debugPrint = `
+Write-Host "DEBUG: Platform = $platform" -ForegroundColor Cyan
+Write-Host "DEBUG: Architecture = $architecture" -ForegroundColor Cyan
+if ($null -eq $platform) {`;
+
+			text = text.replace('if ($null -eq $platform) {', debugPrint);
+		}
+
 		return new Response(text);
 	},
 };