Outpatient department of large public hospitals in China commonly experience phenomena such as high patient volume,complex processes,and poor patient experience.In view of the"pain points"and"blockage points"faced by outpatients when seeking medical treatment,one hospital give full play to the advantages of Internet hospital,and explore new ways to improve the efficiency of outpatient service.The pre-visit service mode for re-visit patients was constructed from four aspects'including the establishment of online and offline integrated number source and medical technology appointment system,the utilization of online consultation as a pre-step for the follow-up link,continuous medical service after diagnosis,and artificial intelligence enabling the whole process of medical treatment,which reduced the suffering of re-visit patients running around,and improved the patients'medical experience.