The utility model discloses an electric drive loads electromechanical liquid combination control system, control system comprises vehicle control unit, preferential steering hydraulic system, traveling system and detection feedback Unit, vehicle control unit receives the gear signal of driver's input, the steering wheel rotational speed signal that accelerator pedal signal and feedback Unit detected, the displacement signal of swing arm handle and scraper bowl handle and turn to the return circuit and working circuit's pressure signal, after the data codes are analyzed and processed, respectively to the machine controller output control signal that goes among work machine controller among the preferential steering hydraulic system and the traveling system, and then the control work motor and the outside output power of motor that traveles, the step control work motor of going forward side by side switches between ordinary mode and low power consumption. The utility model discloses reduce hydraulic system's overflow, throttling loss and meso position load loss, improved the work efficiency of whole car.