Azoxystrobin was discovered in 1992 by researchers Zeneca, 1996 to Amistar trade name was first developed in Europe. Currently, the product is registered on more than 80 kinds of crops in 85 countries around the world. Azoxystrobin is strobilurin fungicide, is a new highly efficient, broad-spectrum fungicide with protective, treatment, eradication, level shift and the suction effect. Can be used for foliage spray, seed treatment, soil treatment may be performed. The product is almost all fungi Gang (Ascomycetes, Basidiomycetes, Oomycetes and imperfect fungi) diseases such as powdery mildew, rust, net blotch, downy mildew, rice blast and so have good activity and currently there are no cross-resistance to fungicides. Is currently the best fungicides.