This paper designs a quadruped inspection robot chassis based on substation inspection, and conducts strength verification on the leg pull rod transmission. We have studied the overall hardware structure and architecture of the chassis. Based on the selected motor and other hardware, we have studied the power management system for the entire machine. We have carried out hardware design for the power management board, and constructed a mechanical and hardware platform for the quadruped chassis. The application of the quadruped chassis will greatly improve the coverage of substation equipment inspection, achieve on-site all terrain inspection of substations, and have broad market application prospects.