Abstract: Objective To investigate the digit ratio and the distribution characteristics of Dalian Han adult people with direct measuring method and to accumulate data in our country. Methods Under the permission of the objects, 430 healthy adult Han nationality people (220 of male and 210 of female) were randomly selected from Dalian Second People Hospital. The anthropometry methods were adopted to measure the length of the 2nd to 5th digit of left and right hand (palmar aspect) and the digit ratio was calculated and compared with the difference of gender and region. Results 1.The digit ratio: the values of 2D∶3D，2D∶4D，2D∶5D，3D∶4D，3D∶5D，4D∶5D of left and right hand of Dalian Han nation people were 0.899 5，0.901 1，0.965 0，0.965 9，1.207 4，1.206 3，1.073 1，1.072 2，1.343 1，1.339 4，1.252 2，1.249 9 in male and 0.906 5，0.907 9，0.976 6，0.975 3，1.223 0，1.222 6，1.078 1，1.075 4，1.352 7，1.350 2，1.255 1，1.255 8 in female. Both male and female presented the trend of 3D∶5D>4D∶5D>2D∶5D>3D∶4D>2D∶4D>2D∶3D. 2. The gender differences: There were significant gender differences of the digit length and digit ratio in the left and right hands (P&l

Key words: Digit ratio, Anthropometry, Dalian Han people