This kind of spraying machine is composed by triplex piston pump, gasoline engine, the rack, spray parts, coiling pipe holder, spraying hose and so on supported items. It is convenient for the worker to give field shift using cart type spraying machine. It owns compact structure, convenient to adjust the pressure, stable current capacity, reliable to use, convenient and quick and so on merits. It is mainly used to spray liquid medicament, prevent crops' plant disease as well as the city virescence. It may be used in the field crop, the orchard, the vegetable plot, the flowers, the trees and so on.