The paper expatiates on the connotation and significance of the joint establishment and sharing of regional medical infor mation resources. Through investigating and analyzing the current utility status of medical information resources of various medical institutions in Fangshan District of Beijing, it puts forward the strategy for the building of the sharing system of regional medical data resources consisting of four aspects, namely, building of the sharing organization management institution, long-term operation mechanism, inter-library cooperation and building of the resources sharing platform.