Combining with the practices in Wuxi Hospital Affiliated to Nanjing University of Chinese Medicine,the paper expounds upon technical architecture, network topology architecture and functions of the mobile Internet hospital system based on the WeChat public platform, including the 3 modules of hospital guiding, diagnosis and treatment and interaction, introduces the experiences of application, points out that the system plays a significant role in the improvement of medical service efficiency, patients' satisfaction with treatment and the harmony between doctors and patients.