Mobile phone shield access record evidence storage and alarm method and computer system

The invention provides a computer system which comprises terminal equipment and a server; a TEE trusted execution environment, an REE rich execution environment and a mobile phone shield are deployed on the terminal equipment, a TA trusted application program is deployed in the TEE, a CA client application program is deployed in the REE, and the CA sends an access request to the mobile phone shield to the TA and sends the access request to the server; the TA sends all the received access requests to the mobile phone shield to a server; the server compares the received access request sent by the TA with the received access request sent by the CA, and judges whether a malicious access request initiated by the CA to the mobile phone shield exists or not; if it is determined that the malicious CA initiates the access request to the mobile phone shield, alarm information is sent to the CA, and the malicious CA is prompted to initiate the access to the mobile phone shield. 本申请提供一种计算机系统，计算机系统包括终端设备和服务器，终端设备上部署有TEE可信