Ethylene oxide is a toxic carcinogen, which used to be used as a bactericide. Ethylene oxide is flammable and explosive, which is difficult to transport for a long distance and has strong regional characteristics. Widely used in washing, pharmaceutical, printing and dyeing industries. It can be used as an initiator of detergent in chemical related industries. Toxic. Ethylene oxide is a kind of gas disinfectant with great toxicity to human body, which is similar to methyl bromide and has irritating taste. Generally, it needs to be used in a closed fumigation cabinet (cyclic ether structure is easy to explode after leakage). Ethylene oxide is also a softener, which may cause cancer after long-term reception. Therefore, ethylene oxide is a toxic substance in our life, so when using ethylene oxide for disinfection, we should bring protective equipment.