The food processing includes the treatment of raw materials, finished products, cooking and frying. These pollutants in the application process are generated and harm to surrounding areas. They are risky to the factory and workers indoor or outdoor or both. Many food dusts have the characteristics of flammable and explosive, including corn, wheat, soy, wheat flour, feed, sugar, corn starch, sugar beet, oats, barley and other powder. Obviously, the control of dust explosion is good for everyone, to protect employees, people and environment and prevent losses caused by production.