The invention discloses a dish washing machine. The dish washing machine comprises a liner, a heating pipe, a drain pipe and a controller, a washing cavity chamber is formed in the liner, and is used for placing tableware, the liner comprises a plastic body part, the plastic body part constitutes the part of the bottom wall of the washing cavity chamber, the heating pipe comprises a heating end accommodated in the washing cavity chamber, the heating end is separated from the plastic body part, a drainage device is used for draining out a detergent in the washing cavity chamber, the controller is electrically connected to the drainage device, in the drying stage of the dish washing machine, the controller is used for controlling the drainage device at a closed state to make a set amount of water reserved in the washing cavity chamber, the set amount of the water separates the heating end and the plastic body part, and a gap is reserved between the water level of the set amount of water and the heating end. Therefore, according to the dish washing machine, the risk can be effectively prevented that the liner is likely deformed or a fire of the liner is caused under heating when the heating end of the heating pipe is heated, and the using safety of the dish washing machine is guaranteed. In addition, the invention further discloses a control method of the dish washing machine.