According to the production problems of maize (Zea mays L.) in Hetao irrigation area of Inner Mongolia, such as single variety, low yield and poor quality. The purpose is to screen out the fine varieties of middle and late maturity maize suitable for planting in Hetao irrigation area. Compared with the local conventional main cultivar Xianyu 1321, The field screening test of 16 introduced new maize varieties was carried out in Hetao Irrigation District, Inner Mongolia. The agronomic characters, yield and its components of 17 maize varieties were monitored. The combination of principal component analysis and grey relational grade was adopted to comprehensively evaluate the tested varieties. Under the same density and water and fertilizer management conditions. There were significant differences in agronomic traits, grain yield, grass yield and its components among different varieties (P<0.05). The highest plant height of DF636 was 12.00% higher than the control; The highest ear position of Ping'an -2 was 8.89% higher than that of the control. The stem thickness of Dongdan 1331 was 20.88% higher than that of control. The grain yield and grass yield of Dongdan1331 were the highest, which increased by 33.20% and 26.90% compared with the control varieties. The result shows that, Dongdan 1331, Jinongda 598, DF636, Ping'an-2, Taiyu 9 and Long 4 had the best comprehensive performance, which were suitable for planting in Hetao irrigation areas of Inner Mongolia, Provide scientific basis for the development of corn industry in this area.