A method for controlling a dish washing machine is disclosed. The disclosed method includes turning off a heater of a steam generator when a water level sensor for the steam generator indicates a minimum water level, supplying water to the steam generator for a first time, to remove air bubbles around the water level sensor, and counting the number of repetition times of the water supplying step when the water level sensor still indicates the minimum water level after the execution of the water supplying step, and again executing the water supplying step, based on the counted value.