In order to further improve the yield level of millets in Jilin region,zhengzagu series millet hybrids were taken to study adaptable identification and different planting density on yield. The results showed that the yield of five millet hybrids of ’Zhangzagu No.5’,’Zhangzagu No.6’,’Zhangzagu No.9’,’Zhangzagu No.10’ and ’A2×7136’ were all higher than ’Jiugu No.11’,increasing by 3.66 ~14.77%. ’Zhangzagu No.5’ at 3.75×10⁵ plants/hm²,which average production was 7022.40 kg/ hm²,had significant yield gap than other hybrids. Comprehensive characteristics of this hybrid were better and grain quality was good,so it is of great application value. The advantage of hybrid millet plant was strong. The appropriate planting density is an effective way to improve yield.