Abstract: The manual inspection of transmission lines involves a large workload, high risks, and low efficiency, which seriously affects the safety and economic benefits of power grid operation. According to the requirements of intelligent inspection, design a fully autonomous robot suitable for transmission lines, combined with a resident nest, obstacle bridge, and shock hammer, to ensure smooth obstacle crossing inspection. After on-site inspection, the fully autonomous robot line inspection only takes more than ten minutes, and the reliability rate of fault identification reaches 96.4%, with significant practical benefits.