Abstract: The human skulls studied in this article are from the ancient tombs in Zhalainuoer site (the 3rd excavation), Xinbaerhuyou Banner, Inner Mongolia. Their dates correspond to Han dynasty. They are the remains of the nomadic people of ancient times.
The author studied 5 male and 3 female adult skulls (17-35 years of age), whose physical characteristics are similar basically. Most of them are of typical chamaecrany and tapeinocrany, combining with wide but flat face. This shows the group of people are mainly related to the modern Siberia Mongoloids (Northern Asiatic Mongoloids).

Key words: Zhalainuoer; Han Dynasty; Human skull; Siberia Mongoloid