Due to the defects caused by design principle and mechanism, Trusted Computing Platform can't effectively protect the system security from physical attacks. A novel design method based on signal integrity analysis was introduced to solve this problem. Based on the work stated above, this paper proposes a revised logical hierarchical design of TPM-APM (TPM-analog parameter measurement) sub-module. Furthermore, engineering implementation method of TPM-APM sub-module is provided by measuring the analog parameters of delay. Through comparing eye patterns, the practicability of implementing the TPM-APM sub-module is verified. Detailed analysis and experiment reveal that the revised TPM-APM sub-module can effectively enhance the ability of protecting Trusted Computing Platform against physical attacks.