Gas leakage is a major safety hazard. To avoid gas poisoning, it is necessary to strengthen the awareness of protection. Rooms with coal stoves should strengthen ventilation, install carbon monoxide alarms, prevent pipeline leakage, and take preventive and protective measures. In hospitals and shopping malls, there are generally gas alarms and fire alarms. When a fire occurs, it will automatically degrade and extinguish the fire. According to the needs of customers, after market research, combined with the advantages of existing products, the designer conducted in-depth research on the appearance, material, function, structure, man-machine and use of the product, and designed a small and sensitive gas alarm. The gas alarm adopts advanced monitoring and sensing technology in terms of function, which can actively detect the indoor gas concentration. When the indoor gas concentration exceeds the safety standard, the system will automatically alarm to the monitoring center, and automatically open the indoor exhaust system to reduce the indoor gas concentration; The appearance design is simple and compact, and the use is very simple. Using environmentally friendly materials, the surface treatment process is exquisite, the keys are clear and clear, and it is convenient to operate.