Based on analysis on the problems existing in the mobile health records, the paper introduces the "ZYD" system researched and developed by Chengdu Knot Medical Technology Co., Ltd., and describes the working principle and characteristics of the system. This system provides reliable data sources for the state to promote the construction of "Internet plus" medical strategy, hierarchical diagnosis and treatment and health records, helps save the costs for report papers and photographic films of the hospital, achieves environmental protection.