AccordingtotheactualsituationofNephrologyDepartmentofAffiliatedHospitalofShanxiUniversityofTraditionalChinese medicine. The detailed systematic analysis of the hospital follow-up WeChat Mini Program is carried out, and it is concluded that the hospital doctor follow-up Mini Program should meet the needs of online consultation, doctor's order feedback and other functions. At the same time, the system architecture design and database design of this program are carried out. The system is written through JavaScript language, WXML language and WXSS language, and the development of Mini Programs is finally realized.