Aiming at the problems of the concentration of disinfectants in the air is too low to achieve the effect of sterilization and disinfection, and the concentration is too high will endanger human health, the concentration sensor is used to limit the concentration range and monitor the air data in real time to ensure the safety. The structure and working process of disinfectant spray device were introduced from the aspects of induction system, control system, storage system, operating system and prompting system. Using the Internet technology, through the AI set remote control, and realize the combination with artificial intelligence. High efficiency, low consumption, simple operation, saving manpower and material resources, has a wide market prospect.