Coefficient of Coincidence(COC) was employed to analyze the variance of DUS traits of soybean standard varieties when they were planted in Heilongjiang. The results showed that the COC of almost all the standard varieties were more than 0.95 except Jilin 20 and Tiefeng 20, for some varieties including Dongnong 42,Xiangchundou, Zhechun 3, Zaoshu 18, Aijiaozao, Dongnong 95019, Weierjin, Zhonghuang 3,Dongnongheidou 1, their COC were 1. There was no relationship between the size of COC and the origin of soybean varieties. The COC of 76.19% DUS traits were more than 0.99, among them, the COC of 13 traits were 1;the COC were more than 0.99 for 85.71% of essential DUS traits and 1 for 71.43% of essential DUS traits. The COC of qualitative traits were bigger than that of quantitative traits. For all the qualitative traits, their COC was more than 0.98. Among quantitative traits, the COC was the smallest for growth period and plant height was next to it.