Abstract: This paper investigated a random sample of 316 Hui nationality (166 males, 150 females) and 542 Han nationality (253 males, 289 females) in Ningxia, aged from 17 to 23. The results showed that hair existed on the proximal phalangeal segments in all people except two females in Hui nationali- ty. The frequency of middle phalangeal segments' hair (MPSH) has no significant difference between males and females in the same nationality, and between Hui and Han nationality (P >0.05). The fre- quency in order of MPSH was found 4 >3 >5 >2. Hair distribution on both hand in same individual was fundamentally symmetrical. The gene frequency of existence of the MPSH in 13 populations was compared and analysed.

Key words: Digital hair; Gene frequency; Hui nationality; Han nationality