As the reform of medical insurance payment methods is implemented, it is necessary for the medical institutions to further improve cost control and standardize the rational use of medical supplies. Over the years, West China Hospital of Sichuan University has made the assessment of the access of supplies by using the existing external evidence and the internal evidence created through real world data analysis methods. In this thesis, the difficulties faced by the access of medical supplies are deeply analyzed. The supplies access management system of West China Hospital of Sichuan University and its achievements in average waiting time of new supplies, rationality of purchase application, scientificity of demonstration results, support for the implementation of fourth-level surgery, and cost control are taken as examples. From this, a set of new paths can be provided for other hospitals to learn from at the time of carrying out medical supplies access management.