Abstract: This paper proposes a P2 Pnetwork connection method based on trusted computing technology to prevent the malicious terminal from accessing to the P2 Pnetwork.We take into account the reliability,availability and security of a terminal,and the behavioral characteristics of the terminal which can protect the terminal is secure when it is running.The experiments prove that the method we presented is more accurate in trust certification of terminal,and the P2 Phas better reliability and stability.