The invention provides a templated integration system and method for medical information system data and relates to the technical field of medical industry data integration. During the process of medical information system data integration, combined with target data standards and aimed at medical information system features (including manufacturers and versions, etc.), a reusable medical information system data integration template is established so as to realize data integration of different medical information systems (such as HIS, LIS, RIS, EMR,PEIS, etc.) Through solidification of special data set and the data conversion rules thereof, a reusable template for a certain medical information system during the process of multiple medical institution data integration is formed; at the same time, the different system templated integration process will enhance the adaptability of the template; a positive correlation between the reuse rate and completeness of the template is established; depending on the continuously improved and optimized template library resource, the implementation difficulty can be effectively reduced, the data integration efficiency can be increased, and the efficient and high quality development of medical information system integration programs is guaranteed.