Triazophos is a broad-spectrum organophosphorus insecticide, acaricide, and nematicide. It is mainly used to control lepidopteran pests, mites, fly larvae and underground pests on fruit trees, cotton and food crops. It is toxic to the skin and mouth, is extremely toxic to aquatic life, and may have long-term adverse effects on the water environment. This test strip is a new generation of pesticide residue detection product developed using colloidal gold technology. Compared with instrumental analysis technology, it is fast, simple and low-cost. Operation time is only 20 minutes.