Phosethyl-Al is an extensive organophosphate fungicide of two-way conduction absorbed by foliage and stem of plants, It specializes in curing and preventing frost downy mildew and epidemic disease for fruit, vegetable, flower, cotton, tobacco, rubber, common hop and potato. It can be used by spraying, irrigating root, dipping as well as mixing with seeds. It is low toxic to human and animal. Low pollution and can be dissolved into water easily. It can be made into WP or WDG, or following the application of Phosethyl-Al 80%WP.