In order to curb the illegal activities in power resources detection, improve the credibility and contribution rate of the industry, and promote the development of high-quality services, this paper proposes a secure and reliable trusted testing system of electric power materials based on blockchain. Firstly, a device and personal information query authorization mechanism is established to provide solutions for personnel and testing equipment authorization. It can help ensure the reliability of testing data on the premise of security. Secondly, we propose a method to deal with the difficulties of testing information management. Lastly, we introduce the case of electricity management helping the power authorities to supervise effectively and increasing the credibility of power material procurement evidence to prove the feasibility of this system.