The invention provides a marine electric regulating valve which comprises a base, a valve body, an electric actuating mechanism, a microprocessor and a chip circuit. The valve body is installed on the base. A bearing is arranged at the upper end of the valve body. The electric actuating mechanism is arranged above the bearing. A connecting base is arranged between the electric actuating mechanism and the bearing. The electric actuating mechanism is connected with the microprocessor located on one side. The chip circuit is arranged on one side of the microprocessor. The chip circuit, the microprocessor and the electric actuating mechanism are matched with one another. According to the marine electric regulating valve, the number of transmission components is small, the structure is simple, and the performance is excellent and reliable; meanwhile, automatic debugging can be achieved, the automatic control performance is good, and the practicability and intelligent controlling are achieved; in addition, maintenance is convenient, fault self-diagnosis can be achieved, the working stability of the product is guaranteed, and the service life of the product is prolonged.