Ozone can kill the bacteria, mold, pests, eggs and other harmful microorganisms in the grain depot effectively. The vomitoxin production of Fusarium can be inhibited by killing the valley fusarium quickly and effectively, and destroy the vomit toxin in grain. Ozone is known as the only feasible effective sanitizer to remove the vomit toxins in the warehousing industry, killing grain piles internal pest and worm eggs, with replacing phosphine fumigation, reducing insect pest resistance and reducing the secondary pollution, improving food quality, prolonging quality, realizing pollution-free green storage.