The invention relates to a support controller for an electrohydraulic control system. The support controller is mainly characterized by comprising an MCU processing unit, a wireless transceiving unit and two paths of power supply systems. The MCU processing unit is respectively connected with the wireless transceiving unit, two CAN transceivers, a human-machine interaction unit, a data acquisition unit, an infrared receiver and a magnetic valve driver, and the magnetic valve driver is connected with a magnetic pilot valve; one path of power supply system is connected with and supplies power to the MCU processing unit, the wireless transceiving unit, the two CAN transceivers and the human-machine interaction unit; the other path of power supply system is connected with and supplies power to the infrared receiver, the data acquisition unit, the magnetic valve driver and the magnetic pilot valve. The support controller for the electrohydraulic control system is reasonable in design, data transmission is carried out in a wireless transmission mode and in a manner that the two paths of power supply systems are adopted, automatic control function demands of a hydraulic support are met, the resource utilization ratio of the support controller is improved, the use of auxiliary equipment is reduced, and failure rates are lowered.