月经初潮年龄是评价青少年青春期生长发育、性成熟的重要指标。随着人民生活水平普遍提高,营养状况明显改善。为了解永州市青少年的生长发育情况,为生理卫生课的开设时间提供科学依据,笔者于1999年10月～12月对永州市中学、中专部分女生月经初潮年龄进行了一次调查。1 对象和方法1.1 对象:采用整群随机抽样方法抽取永州市三所普通中学、三所中专学校15～19岁7000名女生,其中汉族6652人,瑶族348人。1.2 方法:采用自制调查表,用无记名方式,进行回顾性调 Age of menarche is to evaluate adolescent adolescent growth and development, an important indicator of sexual maturity. With the general improvement of people’s living standards, the nutritional status has obviously improved. In order to understand the growth and development of adolescents in Yongzhou and to provide a scientific basis for the establishment of physical health classes, the author conducted a survey on the age of menarche in some secondary schools and secondary vocational schools in October-December 1999. 1 Subjects and Methods 1.1 Subjects: A total of 7,000 female students aged 15-19 were selected from three general secondary schools in Yongzhou City, of which 6652 were Han nationalities and 348 were Yao ethnic groups. 1.2 Methods: The use of self-made questionnaire, with anonymous manner, retrospective transfer