Abstract: Twenty items of 100 adult skulls (male 50, female 50) collected in the Xi'an area were measured. The sexual difference of eight items of them was very significant and could be used for sexual identification. The mesocrany, hysicrany and aeroerany were observed in most male and female cranial skulls. Compared with the data from Hunan Province and the Changehun area, the results showed that the hypsicrany might be used as the standard cranial type in Chinese.

Key words: Skull; Sex difference