Abstract: Under field condition, yield characters and adaptability of 5 new summer maize variety in Taihe county were studied. The results showed that compared with Zhengdan 958, Anlong 4 and Ludan 981 had bigger plants, higer leaf area index at every stage and longer functional period of leaf while the grain filling stage of that were prolonged 5-7 days. Meanwhile, single panicle weight of Anlong 4 and Ludan 981 were increased about 56.0-76.8g, and the grian weight of that were increased by 13.11～20.58%. Anlong 4 had obvious superiority of resistance to maize leaf spot, rust, and borer. Liyu 16 and Ludan 981 had better adaptability and disease resistance, and had signifitant resistance to maize borer. At the same time, Zhongke 11 had light sensitive to maize borer while Huadan 986 had high sensitive to that thus affect yields. So, under the ecoliogical environment condition of Taihe county, Anlong 4 and Ludan 981 had better comprihensive resistance and bigger yield potential, thus they coule be planted in large scale.