Recent years, new increased logistic companies in China are growing with the speed of 16% to 25% every year. There are 700,000 enterprises and institutions related to logistics in China now. However, there hardly any company is so powerful and competitive as to eva luate them comprehensively through network, weak value-add service, and lack of the ability to content with customer's special demands. Therefore, the focus of logistic study is concentrated on how to strengthen the core competitive capacity of 3PL companies. The text gives definition to 3PL, finds out basis of the core competitive capacity, and concludes developing prospect of 3PL.