The invention relates to a drying method of a dish-washing machine, a control method of the dish-washing machine and the dish-washing machine. The drying method of the dish-washing machine comprises the following steps: acquiring first water temperature T1 of a hot rinsing stage under the natural drying condition; when receiving an auxiliary drying instruction after the hot rinsing stage is finished, setting water temperature of the hot rinsing stage to second water temperature T2, wherein the second water temperature T2 is higher than the first water temperature T1; and when receiving an instruction indicating that the hot rinsing stage is finished, controlling a dish-washing machine body to enter the auxiliary drying mode. When auxiliary drying needs to be carried out after the hot rinsing stage is finished, the water is heated to the second water temperature T2 higher than the first water temperature T1 at the hot rinsing stage, so that when auxiliary drying is carried out after thehot rinsing stage is finished, the temperature inside the dish-washing machine body is relatively high, then the evaporation of water is rapid, thus the drying time is reduced, and the drying efficiency is improved.