Gas stove refers to kitchen utensils that are directly heated by fire with liquefied petroleum gas, artificial gas, natural gas and other gas fuels. Gas stoves are also called cooking stoves, and their popularity is well known, but it is difficult to see a common concept. Gas stoves are mainly divided into liquefied gas stoves, gas stoves and natural gas stoves according to gas sources. According to the focus, it can be divided into single focus, double focus and multi-focus