This paper provides a technique which is used for design application server/multimedia resource function (AS/MRF) based on IMS for point to points multimedia sharing service. In this paper, mainly illuminates a method which is used to research and design the functions and service of AS/MRF and gives the signaling process of multiplayer sharing service. Finally, builds IMS multimedia sharing service system to demonstrate and test what is researched and design for multimedia sharing service, verifying its feasibility.