In the process of teaching practice in medical colleges and universities, the teaching cases in schools are usually not the latest cases. How to make the cases in hospital be used for teaching activities in time. This paper has targeted the electronic medical record of the unit. By desensitization, cleaning and sorting out the electronic case data, the collated data is introduced into the hospital information system used for teaching in the school, so as to realize the electronic medical record data of the affiliated hospital is used in the teaching activities of medical schools. The integration and optimization of medical data are realized, and the teaching efficiency and teaching quality for medical students are improved.1