Library Outsourcing first appeared in the United States, which gradually expand from non core business to core business, or even management outsourcing.There are two ways of public library outsourcing management in the United States, namely, part of management outsourcing, that is, outsourcing management, but not all personnel.Another way is overall outsourcing.Through management outsourcing, public libraries in the United States have achieved some results in terms of government responsibility, cost efficiency and public use, but there are many disputes in terms of professionalism, personnel, profits, transparency and so on.Considering outsourcing the management of public libraries in China, it is necessary to learn from American experience: to grasp the scale of government responsibility, to carry out professional supervision, to pay attention to efficiency and fairness, to adopt appropriate outsourcing methods, and to standardize the management of contracts.