Abstract: To provide data for selecting suitable maize varieties and distinguishing different maize varieties in mid- late maturing areas in Shanxi, seven local main promoted varieties were used for randomized block design, wide row and close planting techniques were adopted, ear traits and yield were measured after harvest. The results showed that (1) the yield of the promoted varieties did not reach the significant different level, but the difference of 100-grain weight, number of spike rows, axis diameter, spike diameter and spike length reached the significant level; the genes controlling those traits were different; however, the differences among the varieties did not reach the significant level, reflecting that the genetic background had some relationship; (2) some traits of the varieties showed differences in plots, reflecting that the variety had poor stress resistance; (3) when evaluating the variety, the indicators should be considered comprehensively, so a set of evaluation system should be established in the future. The comprehensive characters of‘Xianyu 335’were the best among the varieties, and the performance of some traits reflected that the genetic backgrounds of these breeds were similar, indicating that the maize genetic resources in China were narrow. In the future, the research on maize breeding should be focus on exploring genetic resources, improving stress resistance and enhancing the adaptation to mechanized harvesting.