The utility model provides a water level regulation device of a sealing water multilevel water seal of a water feed pump. The water level regulation device comprises the water feed pump, the multilevel water seal and a condenser. A water inlet of the multilevel water seal is connected with a returned condensed water outlet of the water feed pump, and a water outlet of the multilevel water seal is connected with the condenser through a pipe. The water level regulation device of the sealing water multilevel water seal of the water feed pump further comprises an automatic water drainage pipe between the water outlet of the multilevel water seal and the condenser, a water level measuring device for measuring the water level in a first-level water seal pipe and a DCS control system. Valves are arranged on the automatic water drainage pipe, the signal output end of the water level measuring device is connected with the DCS control system, and the DSC control system is electrically connected with the valves. According to the water level regulation device, the water level measuring device is additionally arranged and connected to the DSC control system, the valves on the automatic water drainage pipe are controlled by the DCS control system to be opened and closed, remote and real-time water level control is achieved, and water seal damage and overflowing are effectively overcome.