Niumendong Neolith Site is located in Huining county, Gansu province, and covers an area of approximately 16 square kilometers. Niumendong village is the center of the site, and includes a burial ground which covers about 400,000 sq m.

Pottery, jade and bones have been excavated, and they date back over 5,000 years, to the Neolithic Age. The site was included in the list of national cultural relic protection units in July 2006.