本文希望从中国南、北62个人群共44969例样本（男为19883例，女为25086例）的8项体部指数值来探讨南北方体质类型的纬度分界。通过偏相关分析，发现在控制变量为人均可支配收入、年均降水量、年均光照、年平均温度的条件下，纬度与体部指数仍显著相关。主成分分析证实中国人群体部特征存在北方类型和南方类型，未出现除南北体质类型外的汉族类型与藏缅语族类型。中国族群之间体部指数值的差异主要体现在BMI、身高体质量指数和身高胸围指数这3个指数上。综合男性、女性偏相关分析的结果，发现身高体质量指数是最适合进行南北体质类型纬度分界分析的指数。通过纬度与身高体质量指数的散点图分析，发现绝大多数南方人群位点分布在30.0°N左侧下方，绝大多数北方人群位点分布在35.0°N右侧上方；在30.0°N左侧与35.0°N右侧，人群体部特征出现明显的差异。因此本文建议：把30.0°N作为南方类型人群纬度分布的上限，35.0°N作为北方类型人群纬度分布的下限；北纬30.0°N~35.0°N范围内作为中国南、北体部特征类型分布的过渡地区。

There are different views in the academic community regarding the latitudinal division of physical types in southern and northern China. In this paper, we wish to explore the latitudinal demarcation of the north-south body type from the values of the eight body indexes in 62 populations totaling 44,969 cases (19,883 males and 25,086 females). Through partial correlation analysis, it is found that latitude and body indexes are still significantly correlated under the condition that the control variables are per capita disposable income, annual average precipitation, annual average light and annual average temperature. Combining the results of the male and female bias correlation analyses, the height-weight index is the most suitable index for latitudinal demarcation analyses of north-south body types. Principal component analysis confirms that the characteristics of the Chinese population are divided into northern and southern types, and that there are no Han and Tibetan-Burmese types in addition to the northern and southern body types. The differences of body index values between Chinese ethnic groups are mainly reflected in three indexes: BMI, height-weight index, and height-chest circumference index. Compared with the southern Chinese male population, the northern male population is relatively obese, with higher percentage body fat, heavier weight and wider chest. The body weight of northern females are generally higher than that of southern females. Based on the distribution of communities in the middle zone of the aggregation area of the southern and northern community loci, the transition zone between the southern and northern types is inferred to be 30.0°~35.0°N. latitude. Through the scatter plot analysis of latitude versus height-weight index, it is found that the majority of the southern population loci are distributed below the left side of 30.0°N, and the majority of the northern population loci are distributed above the right side of 35.0°N. Moreover, there is a significant difference between the left side of 30.0° and the right side of 35.0°in terms of population characteristics. These confirm the suitability of 30.0° to 35.0° as the transition zone between the southern and northern types of China. Therefore, this paper suggests that 30.0°N latitude is the upper limit of the latitudinal distribution of the southern type of population, 35.0°N latitude is the lower limit of the latitudinal distribution of the northern type of population, and 30.0°N latitude to 35.0°N latitude is the transition area of the distribution of the characteristic types of the southern and northern body parts in China.