Permethrin, also known as permethrin, permethrin, and permethrin, is an organic compound with a chemical formula of C21H20Cl2O3. Insecticide with strong contact and stomach poisoning effects can use it. With the characteristics of strong pouring force and fast insecticidal speed, it can be used for vegetables, tea, fruit trees, cotton and other crops to control cabbage caterpillar, aphids, cotton bollworms, cotton bollworms, cotton aphids, green mirid bugs, yellow striped flea beetles, and peach worms.