The invention relates to an underwater control module. The underwater control module comprises an upper docking panel, a lower docking panel, a locking rod and a protective hood, wherein the upper docking panel comprises an upper panel, at least two electrical connectors are arranged at one side of the upper panel in a penetrating manner, a circular tube is arranged at the center of the top face of the upper panel, a plurality of oil path holes are formed around the circular tube, electromagnetic reversing valves are arranged corresponding to the oil path holes, hydraulic quick-change connectors are arranged on the bottom face of the upper panel corresponding to the oil path holes, and at least two guiding rods are further arranged on the bottom face of the upper panel; the lower docking panel comprises a lower panel, electrical connectors are arranged at one side of the lower panel, a threaded hole is formed in the center of the lower panel, hydraulic quick-change connectors are arranged on the top face of the lower panel, and guiding holes are further formed in the top face of the lower panel; a shoulder is arranged at the upper end of the locking rod, a shoulder is arranged at the middle of the locking rod, and the lower end of the locking rod is provided with threads; a tray is fixedly arranged on the middle shoulder, and the threads of the lower end of the locking rod is connected with the threaded hole of the lower panel; a through hole is formed in the top face of the protective hood, the shoulder of the upper end of the locking rod is tightly attached to the bottom face of the through hole of the protective hood, and a hood opening of the protective hood is fixedly arranged on the top face of the upper panel. The underwater control module is high in docking accuracy, is convenient to mount and dismount and can be applied to the field of deep water.