In order to solve the problem which has existed in the mobile p2p network, for example, the excessive consumption of system resources and the attacks of denial service, a new access control is proposed in this paper. Based on RBAC access control framework, MT-RBAC access control framework adopts the techniques of spatial context, trust constraint and resource control to achieve the access control mechanism of the Mobile P2P System. The new access control framework can effectively and efficiently increase the usability of the system, and prevent the system from the irrational resource request from spite nodes.