Abstract: In order to improve the yield and benefit of dryland maize,aimed at the problems of limited and unevenly distributed rainfall and low yield farmland in the dry-farming areas in Yanshan hilly Inner Mongolia, study on 4 kinds of different film mulching treatment field test analysis of effects of different treatments on the growth and yield of dryland maize.The results showed that the mode of whole plastic-film mulching could advance maturity time 10 -14 day,increase plant height,leaf area index and dry matter accumu-lation,raise seed setting rate and panicle weight, In 2013and2014,the yield increased by 27.15%,51.22% respectively,raise yield and water use efficiency of maize significantly.