The principle of the high-pressure spray disinfection/deodorization system is to use a high-pressure pump to pressurize the mixed proportion of drugs to 50-70kg, send them to the high-pressure nozzle through the high-pressure pipeline for atomization, and form a floating water mist. Because the water mist particles are micron sized and very small, they can absorb impurities in the air, create good and fresh air, and achieve multiple effects such as dust reduction and deodorization. This system has a very significant effect on odor environments such as garbage transfer stations, garbage collection stations, landfills, and sewage treatment. Configuring a spray gun system can also achieve cleaning and disinfection functions, making it versatile and economical to use. The system has low operation and maintenance costs, is economical and practical, and the control system can achieve unmanned automatic control.