Abstract: JP75/300 and JP75/400 roll-type drench irrigation machines developed by Hebei Nonghaha Company innovatively designed a positioning method, designed the operation model and parameter design different from the traditional roll-type drench irrigation machine, established the simulation model of the roll-type drench irrigation and spraying vehicle, and carried out the working speed simulation analysis. Through field experiments, the irrigation intensity, irrigation water power and irrigation loss of this series of irrigation machines were analyzed. The economic benefit is analyzed from four aspects: water saving, electricity saving, labor saving and efficiency increase.