The invention discloses a clinical nutrition diagnosis and treatment simulation system, which includes an assessment module, a diagnosis module, an intervention module, a monitoring module and an effect evaluation and analysis module. The clinical nutrition diagnosis and treatment simulation system also includes an intelligent database, which includes an assessment database, a diagnosis Database, intervention database, monitoring database; system users can diagnose according to the diagnosis prompts, and the intelligent database is also provided with an intervention database. The intervention database includes a nutrition analysis model, and the analysis model classifies and refines nutrition problems into three-level nutrition problems, Generate intervention information based on the intervention model. The invention provides a clinical nutrition diagnosis and treatment simulation system, which systematizes the implementation of clinical nutrition intervention, and can be used as a training tool for the behavior development of hospital nutrition diagnosis and treatment personnel; accurately limits nutrition problems; the nutrition problem analysis model can be updated to keep up with the latest in the industry Synchronization of research results.