With the development of China’s mobile Internet industry，the competition for APP developers is now more intense. Developers will continue to face both opportunities and challenges. It is essential that they understand in depth the current trends in China’s mobile Internet industry and user behavior. This paper introduces the China’s mobile Internet market，followed by user analysis，including user geographical distribution and migration，and time distribution. Users are also divided into three categories（frequent users，ordinary users and less frequent users）in order to further understand different user behavior. At the end of this paper，Umeng forecasts several development trends in China’s mobile internet industry based on the data it has collected.