The computer application system for information management and online operation in hospital management and medical activities is called HIS for short. HIS is an information management system covering all business and the whole business process of the hospital. According to the definition given by MorrisF. Collen, which is recognized by academic circles, should be a platform for all departments of the hospital to collect, store, process, retrieve and exchange patient care information and management information by using electronic computers and communication equipment, and to meet the functional needs of all authorized users. Hospital information system consists of medical information system and hospital management information system. Modern hospital information system adopts microcomputer local area network and workstation, and comprehensively applies cybernetics, information theory, artificial intelligence and system engineering.
In the case of limited capital investment, in order to achieve good hospital informatization effect, in addition to technical factors, medical principles, medical business nature, technical means, system functions and other factors must be considered in the project establishment process. As shown in the figure below: