Water drinking device and control method thereof

The invention provides a water drinking device and a control method thereof. The water drinking device comprises a machine shell, a water tank, a heating module, a first water pump, a refrigeration module and a second water pump. The water drinking device has a first water outlet mode, a second water outlet mode and a sterilization mode, and when the water drinking device is in the first water outlet mode, the water tank, the first water pump, the heating module and the complete machine water outlet are communicated to form a first water outlet flow path; when the water drinking device is in a second water outlet mode, the water tank, the second water pump, the refrigeration module and the complete machine water outlet are communicated to form a second water outlet flow path; when the water drinking device is in a sterilization mode, the first water pump, the heating module and the refrigeration module are conducted to form a sterilization circulation loop. The water supply safety of the water drinking device is good.