Aluminum phosphide is usually used as a broad-spectrum fumigation insecticide, mainly used for fumigation and storage of pests, a variety of space pests, grain storage pests, grain storage pests, outdoor rodents in caves, etc.highly toxic phosphin e gas, which enters the body through the respiratory system of insects (or animals such as mice), acts on the respiratory chain of cell mitochondria and cytochrome oxidase, inhibits its normal breathing and kills . In the absence of oxygen, phosphin e is not easily inhaled by insects, and it does not show toxicity. In the case of oxygen, phosphin e can be inhaled and kill insects. Insects can produce paralysis or protective coma in high concentrations of phosphin e and reduce breathing. The preparation products can be fumigated raw grain, finished grain, oil and dried potatoes.