到下面的目录下找到utils.js文件，转到209行

C:\Users\Administrator\.vscode\extensions\vsciot-vscode.vscode-arduino-0.6.0-win32-x64\out\src\common

function spawn(command, args = [], options = {}, output) {

    return new Promise((resolve, reject) => {
        options.cwd = options.cwd || path.resolve(path.join(__dirname, ".."));
        const child = child_process.spawn(command, args, options);
        let codepage = "65001";
        /***********************注释这里的编码设置，解决arduino编译输出乱码问题 
         if (os.platform() === "win32") {
          codepage = getArduinoL4jCodepage(command.replace(/.exe$/i, ".l4j.ini"));

            if (!codepage) {
                try {
                    const chcp = child_process.execSync("chcp.com");
                    codepage = chcp.toString().split(":").pop().trim();
                }
                catch (error) {
                    outputChannel_1.arduinoChannel.warning(`Defaulting to code page 850 because chcp.com failed.\
                    \rEnsure your path includes %SystemRoot%\\system32\r${error.message}`);
                    codepage = "850";
                }
            }
        }*************************/