Objective To study the relationship between the fluctuating asymmetry (FA) of digit length and coronary heart disease. Methods Using anthropometry, digit length of both hands of 304 individuals (controls:152; coronary heart disease:152) were measured in men from Ningxia Han nationality. The FA of digit length were calculated respectively and the mean values of them was compared between coronary heart disease patients and controls. Results Our results showed there was a trend as 2FA＞4FA＞3FA＞5FA in both group; The mean values of each FA were higher in patients than those of in controls. There were significant differences in 2FA（EM>P/EM>≤0.01）,3FA（EM>P/EM><0.05）,4FA（EM>P/EM><0.05）,composite FA(CFA) （EM>P/EM>≤0.1）, especially in 2FA between patients and controls. There was a significant difference in|L-R|≥0.4 on distribution of 2FA between two groups（EM>