1.在确认cmd 下载好composer
2. composer -V
3. composer config -g repo.packagist composer https://packagist.phpcomposer.com
4.composer create-project laravel/laravel your-project-name --prefer-dist "5.3.*"
your-project-name 自己取一个项目名称
3是版本,可以调整
原文：http://www.cnblogs.com/zonglonglong/p/7072456.html