In view of the problems existing in the reinforcement binding and installation process while prefabricating traditional gravity caissons，this study innovates a new assembly and installation technology of prefabricated reinforcement sections for a large caisson. The technology can effectively reduce the hoisting times of lifting equipment，improve the qualification rate of the protective layer thickness of reinforcement，and eliminate the safety risk of reinforcement insertion in the air. The installation technology has been successfully applied to Berths No. 9 and 10 in Dalanping of Qinzhou Port，promoting the development of caisson prefabrication toward mechanization，intelligence，and assembly. The application results reveal that the assembly and installation technology of prefabricated reinforcement sections for caissons has great advantages in quality，safety，efficiency，and benefits.