File->Import->打开大类General->找到小类Existing Projects info Workspace->选择Select root dirctory,找到对应项目,选中项目文件夹,点确定,再点Finish就可以了 按照file->import->generalexisting project in workspace->browse,选择了要导入的工程或者整个workspace, 这时下一步是灰色的,点不了,显示Some projects cannot be imported because they already exist in the workspace. 只需要把copy to worksapce的勾去掉,然后点击refresh一下,就可以了。