At present, the transmission system of heavy-duty electric-driven explosion-proof rubber-tyred vehicle in coal mine generally adopts the transmission form of low-speed motor with reducer. Because of the large difference of vehicle-to-vehicle explosion-proof rubber-tyred vehicle's operating load, heavy load and large difference of driving speed in various working conditions, it requires a wide range of motor speed regulation. In order to meet the vehicle performance, the drive system has large installed power, low efficiency and large energy loss. Aiming at the above problems, based on the closed-loop feedback control strategy of driving current, this paper develops a parallel dual-drive hybrid drive system of heavy-duty electric-driven explosion-proof rubber-tyred vehicle in coal mine, and carries out simulation test and experimental verification on the parallel dual-drive variable speed system. The results show that the comprehensive energy consumption of the parallel double-drive variable speed system can be reduced by about 11.3% compared with that of the single-drive motor system under all working conditions. Considering the influence of the parallel double-drive system on the quality of the whole vehicle, the comprehensive energy consumption of the parallel double-drive variable speed system under all working conditions can be reduced by about 10% compared with that of the single-drive motor system, and the driving range of the whole vehicle can be increased by 10% under the same other conditions. The simulation and test conclusions are basically consistent.