The invention relates to a trusted computing and digital certificate technology-based expected value management method. The method comprises the following steps: generating a CA (Certificate Authority) certificate; acquiring signature software according to the CA certificate; detecting the signature software; performing expected value processing on the verified signature software by using a management center. Thus, the normalization of a software package installing process of a power production control type system terminal is guaranteed, the management center can timely learn the condition of the software package installed on the terminal, and further the consistency and the safety of the source of the software package installed on the terminal is guaranteed.