Soybean cyst nematode（SCN） disease, caused by Heterodera glycines, occurs widely in the Heihe area. In order to clarify the changes of population distribution and physiological races of SCN in Heihe area, we monitored SCN race in Heihe area in 2010 and 2019 respectively. The results showed that: Soybean cyst nematode disease is widely distributed in Heihe area. In the two monitoring, the cysts numbers of SCN decreased. The pathogenicity differentiation of SCN wasn't significant change,identification of races were the race 3. In 2010, race 6 was found in Shuangquan town of Wudalianchi city and Yaotun town of Sunwu County.The survey in 2019 found that the soybean cystic nematode disease was SCN 3, and SCN 6 was not found.