This paper presents a progressive transmission method of mixed subdivision mesh based on multiple implied overlay tree P2P network. Peer-to-Peer networks are widely used in media transmission because of its excellent network scalability. Scalable media service, especially mixed subdivision mesh is proposed to adapt to different terminal processing abilities. For stratified characteristics of progressive mesh, we use multiple implied tree cover P2P technology to transmit 3D mesh of mixed subdivision model. It effectively realizes to reduce MAX, average system load link and lower the average Relative delay penalty. Finally a complete set of solution is given, which is proved to be an effective method by simulation experiment.