Abstract: The process of clinical nutrition diagnosis and treatment can be standardized and the systematic management of clinical nutrition diagnosis and treatment is realized by using information technology. The system is based on B/S architecture, developed in Java language, and uses Web Service to interact with the clinical business system through the integrated platform, which meets the business needs of the department. The system is deeply integrated with the clinical business system through online and offline forms to realize the functions of nutrition assessment, nutrition risk early warning, nutrition consultation, mobile ward round, intelligent nutrition consultation and so on. The system can improve doctors' work efficiency, realize the whole process of nutrition diagnosis and treatment, fine management, and realize the interconnection between systems.