This spraying machine is mating with more than 65 horsepower tractor provided with rear PTO shaft and used in spraying operation of the crop. It is used mainly to spray herbicide, insecticide and Liquid fertilizer etc. for field crops like corn, wheat and soybean etc. It is also used to clean and sterilize farm machinery & implement, all vehicles and livestock shed by connecting with spray gun (optional). Advantages of this spraying machine include simple structure, convenient operation & maintenance, and quick hitch with the tractor. Liquid pump is diaphragm pump with high pressure and stable flow rate. Besides, it can be operated under the condition of no water and possess long service life. Spray tank is made of glass reinforced plastics and solid and resistant to corrosion of all pesticides. Spray pipe is made of stainless steel and never rusts. The whole spray boom system uses swinging shock absorption structure in favor of stable operation of spray boom.