Tebuconazole is a triazole fungicide. It is a high-efficiency fungicide used for seed treatment or leaf spraying of important economic crops. It can also conduct to the top of the object and kill the bacteria in the object. Its bactericidal mechanism is mainly to inhibit the biosynthesis of ergosterol of pathogenic bacteria, and can prevent and control diseases caused by powdery mildew, stem rust, coracospora, nuclear cavity bacteria and chaetospora. At present, it is used as seed treatment agent and foliar spray all over the world. It has broad spectrum of bactericidal activity, high activity and long duration. It is mainly used to control a variety of fungal diseases on wheat, rice, peanuts, vegetables, bananas, apples, pears, corn sorghum and other crops.