公共利益具有得到法律保护的优先价值。图书馆是公共利益的代言人之一,从某种意义上讲,维护图书馆权利就是保障公共利益。在数字版权保护环境中,图书馆权利出现了逐渐弱化的倾向,解决问题的关键是对图书馆的社会角色进行科学定位,为此应该建立一个衡量商业运作和公益服务的标准。 Public interest has the priority to be protected by law. Library is one of the public interest spokesmen, in a sense, to safeguard the rights of the library is to protect the public interest. In the digital copyright protection environment, the rights of libraries appear to be gradually weakened. The key to solve the problem is to locate the social role of libraries in a scientific manner. Therefore, a standard to measure commercial operation and public service should be established.