Abstract: The decomposition and assembling of steel towers using derricks with double rockers in mountainous areas, traditional mechanical grinding machines have a large volume and each grinding machine is equipped with a separate power system, resulting in multiple grinding machines occupying limited construction space on site.The weight of a single grinder is heavy, making it inconvenient for transportation or manual handling in mountainous areas. The article proposes a centralized hydraulic electric control traction system for floor-standing derricks with double rockers, analyzes key technologies such as One traction four tail frame rope control syste, design of pole power system, and centralized control for hydraulic winch grinding, and has been applied on the decomposition and assembling of steel towers of UHV from Fuzhou to Xiamen.The results indicate that the system equipment can significantly reduce the occupation of traction system operators and mechanical equipment, achieve mechanized personnel replacement, intelligent personnel reduction, and further improve the intrinsic safety and construction efficiency of tower assembly construction.