Mancozeb is protective fungicide, while Difenoconazole belongs to protective and treatment fungicide. The former enhance the ability of plants to resist disease, thereby relatively play a bactericidal effect and mainly prevent vegetable downy mildew, anthracnose, leaf spot and so on. The latter has a relatively higher security among triazole fungicide, very effective to seed treatment or foliar treatment so that can improve crop yields and quality assurance.