Platform enterprise, as a new organizational form, highlights the huge influence in the mobile Internet era. The bilateral or multilateral market participants can reduce transaction cost with the platform, and can make full use of various resources provided by the platform by low cost. Based on clearing concepts of platform, platform enterprise and platform ecosystem, the characteristics and classification of platform, network effect, competition strategy as well as growth process, platform ecosystem construction at home and abroad are discussed and reviewed roundly in this paper. Finally, based on the important value of the platform enterprise ecosystem to the theoretical research and enterprise practice, this paper puts forward the future research direction.