The field experiment on hemp-plastic mulching cultivation,normal plastic mulching cultivation and usual cultivation of maize in semi-arid area was carried out.Through the experiment,effect of hemp-plastic mulching cultivation to soil physical and chemical properties,soil humidity,soil water content,growth and yield of maize was studied.The results showed that cultivating maize with hemp-plastic mulching could hasten the growth stage,increase maize plant height and leaf area index,decrease the dry weight of maize root,increase water utilization efficiency and increase maize yield by 8.42% compared with usual cultivation.However, the economic profit for hemp-plastic mulching maize was lower than that of usual cultivation.