Publishing broker (also known as copyright agent) refers to an intermediary institution or individual that connects authors and publishers. They signed a copyright brokerage contract with the author to help the author find publishing opportunities and gain certain benefits. Christopher Park Jung Su Literature Agency is such a publishing agency. They have a good relationship with the publishing house, and are responsible for discovering authors, cultivating authors and packaging authors, determining the route of the works through market research and analysis, making joint publicity with the publishing house before the works are listed, and earning profits by collecting commissions after the works are listed.

At present, a number of private publishing brokers have appeared in China, but due to the short operation time, the publishing broker market is still chaotic, and there are not many profiters. The largest official publishing agency is China Copyright Agency, which was established in 1998. It is the first national copyright agency approved by the municipal government in China, and the only national comprehensive copyright agency with the largest scale and the most kinds of copyright agencies in China. At the beginning of its establishment, China Copyright Agency was mainly responsible for writers' rights protection and protection from infringement. This is a non-profit service organization. Copyright trade is a matter of recent years, mainly abroad.

From the analysis of the present situation, folk publishing brokers are flexible and highly market-oriented, but their strength is often slightly weak, their profits are not strong and their risks are great. Although the official publishing broker is powerful, it has no real commercial operation because of its low degree of marketization. Therefore, if local official publishing houses and private publishing brokers can complement each other, it will be beneficial to the development of book publishing industry.