The invention provides a control method of a scrubber, which uses the scrubber with a water purification device, a pollution discharge device, a suction device and a floor brush, and comprises a first mode: receiving a startup instruction and broadcasting first voice information, and starting the water purification device, the pollution discharge device, the suction device and the floor brush; in the second mode, the mode switching instruction is received, second voice information is broadcasted, and the vacuum degree of the suction device and the water amount of the floor brush are increased; in the third mode, the water suction instruction is received, third voice information is broadcasted, and the suction device sucks sewage into the sewage discharge device; in the fourth mode, the self-cleaning instruction is received, fourth voice information is broadcasted, the suction device stops sucking sewage, and the floor brush starts self-cleaning. Compared with the prior art, the ground can be cleaned more intelligently, voice broadcast can be achieved in multiple modes, a user can rapidly know the functions of the scrubber through voice prompt, the scrubber can be operated more efficiently, the scrubber is suitable for multiple people, and the situation that the scrubber breaks down due to misoperation of the user can be avoided.