Dish washing machine and automatic water replenishing method and system thereof

The invention discloses a dish-washing machine and an automatic water replenishing method and system thereof.The method comprises the steps that the working current of a variable-frequency washing pump in the dish-washing machine is obtained, the water level of an inner container of the dish-washing machine is determined according to the working current of the variable-frequency washing pump, and when it is determined that the dish-washing machine needs to be replenished with water according to the water level of the inner container, the variable-frequency washing pump is started; controlling a water inlet valve of the dish-washing machine to open. According to the automatic water replenishing method, the water level of the inner container of the dish-washing machine is determined according to the working current of the variable-frequency washing pump, water level detection is more reliable, and the dish-washing machine can be prevented from mistakenly triggering water replenishing. 本发明公开了一种洗碗机及其自动补水方法和自动补水系统