目的  测量广西成年人群各身体脂肪参数，探讨其脂肪含量分布随年龄及性别变化特点。  方法  通过随机抽样方法选取广西籍男性居民1558例，女性居民2132例，将研究对象按10岁为1个年龄组分组，用体成分仪测量并记录各脂肪参数，采用SPSS 22.0统计学软件分析数据。  结果  广西女性总脂肪量、各部位总脂肪量、各年龄组皮下及四肢脂肪含量均高于男性，男性各部位脂肪量随着年龄增加呈先上升后下降趋势，在30岁时各脂肪参数达峰值，且此年龄段的超重和肥胖发生率最高，男性在30~40岁时内脏脂肪和躯干脂肪多于女性，表现为向心性肥胖为主。女性总脂肪含量、各年龄组各部位脂肪含量在女性20~50岁时呈快速上升阶段，并在40岁达到高峰，50岁后缓慢下降并逐渐趋于平稳。青年女性主要表现为皮下及四肢脂肪增多为主，在40~50岁后主要表现为向心性肥胖，此年龄组超重和肥胖发生率最高。  结论  广西男女人群身体脂肪含量随年龄增长先增加后减少，男性20~30岁和女性20~50岁是身体脂肪含量变化趋势的关键时间点。除了内脏及躯干脂肪含量外，不同年龄组及不同部位脂肪含量均为广西女性人群多于男性人群，广西青壮年男性的内脏和躯干脂肪含量高于女性。

Objective  To measure the body fat parameters of adult population in Guangxi, and to explore the characteristics of distribution of fat content with age and gender.   Methods  A total of 1558 male residents and 2132 female residents were selected by random sampling method . The subjects were divided into 8 groups every 10 years, and the fat parameters were measured and recorded by body composition analyzer. The statistical software SPSS 22.0 analysed data.   Results  The total of fat mass and fat content of all parts as well as the subcutaneous and limb fat content of all age groups in Guangxi females were higher than that of the male. The fat content of each part of the male increased first and then decreased with age. It was at the age of 30 that the fat parameters of the male peaked with the highest rates of overweight and obesity. Males had more visceral fat and trunk fat than women at 30-40 years old, and showed predominantly centripetal obesity.Total fat content and fat content of all age groups of female showed a rapid rise at the age of 20-50, and reached a peak at 40 years old. After 50 years old, they slowly decreased and gradually stabilized. The main manifestations of young women were subcutaneous and limb fat increase, which was mainly characterized by centripetal obesity after 40-50 years old, when the rates of overweight and obesity were the highest.  Conclusion  The body fat content of male and female people in Guangxi increases first and then decreases with age. Twenty-thirty years old of Males and 20-50 years old of female are the key time points for the change of body fat content. In addition of the visceral and trunk fat content, the fat content of different age groups and different parts of female is higher in Guangxi than that of males. The visceral and trunk fat content of Guangxi young adults male is higher than that of females.