In this paper, the R-PS integration technique of the digital radiology is discussed. By the integration of the RIS and PACS, all data and information of each system and each medical image equipment in R-PS can be exchanged according to DICOM3.0, and seamless linkage can be realized by module interfaces. R-PS has many advantages such as share, safety, compatibility, practicability and feasibility. Standardization of communication interface, modularization of application and resource share of medical information can be realized by this technique.