Abstract: A sample of 947 Mongolians was investigated on rolling, folding, twisting, pointed and clover-leaf tongues in Elute, Bargud and Buriats Subpopulations of Mongol in September, 1997. The result is as follows: (1) Over half of the Mongolians could show rolling and pointed tongues with a frequency of 80.68% and 77.3% respectively. However, only a few of the Mongolians could perform folding, twisting and clover-leaf tongues with frequencies of 4.86% , 29.25% and 28.62% , respectively. (2) The frequencies of 5 types, except pointed tongue, have no significant sexual difference. (3) Correlation occurred between most of the 5 types. (4) Between the 3 subpopulations, the frequency of twisting has obvious difference while the other 4 types did not in most cases. (5) Compared with other subpopulations, the Mongolians in Hulunbuir League has a higher frequency of rolling tongue and a lower one of twisting tongue.

Key words: Rolling tongue; Folding tongue; Twisting tongue; Pointed tongue; Clover-leaf tongue; Mongolian Nationality