Washing device, and control method thereof and smart home equipment

The invention discloses a washing device and a control method thereof, and smart home equipment, and belongs to the technical field of smart home, the washing device comprises a supporting table, a charging cup, a liquid adding device and a power management system, and the top surface of the supporting table is provided with a first charging seat; the heating piece of the charging cup can be electrically connected to the first charging seat; the liquid adding device is provided with a fluid inlet, a fluid outlet and an on-off switch, and the fluid outlet can be located above the charging cup; and the power supply management system is in control connection with the first charging seat and the on-off switch, and the power supply management system is used for receiving the starting instruction, controlling the on-off switch to be turned on according to the starting instruction so as to charge liquid into the charging cup, and controlling the first charging seat to be powered on according to the starting instruct