Objective To investigate the stature and arm span of young and middle aged adults of rural Han nationality in Liaoning. Methods A methodology and a standard of anthropology were used to measure arm span and stature of 769 young and middle aged adults (males 386, females 383) of rural Han nationality in Liaoning province. The original data were analyzed by medical statistics and regression analysis. Results Based on the data of the stature and arm span obtained in this study, the mean, difference, typing of differences, exponent and regression equations were determined for young and middle aged adults of rural Han nationality in Liaoning. Conclusion The measurement and typing among the stature and arm span have uniformity with Chinese stature and the difference of height and sex. The stature has high correlation with the arm span. It is reliable to use the regression equations to estimate the stature or the arm span.