目的:探讨掌骨的侧别与性别差异及性别判别方法,积累有关解剖学资料。方法:随机选择健康汉族大学生,进行双手后前位X线拍片,分别测量各掌骨长与中点宽,同时测量身高,将所得数据用SPSS软件进行统计学分析处理。结果:男性第2、4、5掌骨宽度以及女性第3、4、5掌骨宽度左右手侧差有显著性意义,男女性别差异亦有显著意义;同时应用Fisher法分析得出4个判别式,判别率分别为87.6％和89.8％。结论:所得性别判别式对法医学性别判别应用价值较大,为体质人类学和法医学提供了有关解剖学资料。 Objective: To explore the side and sex differences of metacarpal bone and the method of gender discrimination, and to accumulate relevant anatomical data. Methods: Healthy Han nationality college students were randomly selected. The anterior radiographs of both hands were taken. The length and midpoint of each metacarpal were measured. The height of each metacarpal was measured. The data were analyzed by SPSS software. Results: The width of the second and fifth metacarpal of men and the width of the left and right hands of the third, fourth and fifth females were significant, and there was significant difference between the male and the female gender. At the same time, four discriminant formulas were discriminated by Fisher’s method The rates were 87.6% and 89.8% respectively. Conclusion: The gender discriminant has great value in discriminating between sexes in forensic medicine and provides anatomical data for physique anthropology and forensic science.