Aiming at the shortcomings of high false alarm rate, single alarm mode and low degree of intelligence for gas leakage alarms currently on the market, a high reliability and intelligent alarm system for kitchen safety is proposed. By establishing a mathematical model of temperature and humidity compensation for gas sensors, this method compensates the nonlinearity error caused by temperature and humidity based on fuzzy reasoning, and improves the detection precision and reduces the false alarm rate. On this basis, the use of Internet of Things technology to achieve multi-system alarm and intelligent protection, improves the system's security and reliability and intelligence, and takes the dynamic threshold for different users of the kitchen environment to take the difference, greatly reducing the system's false positive rate.