To make this special issue is intended to design and create a chemical spray water by engine type. Characteristics of the machine are made from steel structure, scene 1 "× 2.5. 46 × 80 mm × 110 cm (width × length × height) and engine size, etc., there are 1.2 horsepower speed 7000 RPM. Power transmission with shaft deals made to shake lukthuai. Piao, spinning, and then send it to Pistons. The system of two-cylinder horizontal brass pump By testing the actual chemical water-type extruding machine by the engine of a template for performance and actual performance by spraying drugs eliminate weeds in the garden! 6603 sq m of space, it was found that the underlying machine is capable of doing the job is 1.77 acres/hour.