Abstract: This access isolation control method of trusted computing based on computer network, using wavelet analysis method to complete the analysis of computer network access, and then use the IP algorithm to address frequent distance access risk identification based on the analysis of risk characteristics, access. Based on this, according to the risk characteristics of access, using trusted computing technology, establishing network access quarantine control model, thus completing the computer network access quarantine overall structure design of the control system, and analyze the content of each module structure. Based on the analysis of the security attributes of network access control, the process of computer network access control is obtained. The experimental results show that the proposed method can effectively control the access of computer network, improve the accuracy of isolation control and reduce the difficulty of computer network access control.