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目的：了解重庆市中小学生生长发育现状和变化特点。方法：对1997年重庆市7－17岁中小学生的生长发育调查资料进行分析，并与本市1990年和全国1995年资料进行对比分析。结果：男生11－15岁，女生9－14岁为生长发育快速增长期；城市学生的生长发育好于乡村学生；男女生的形态发育出现两次交叉，机能发育无交叉。7年间，形态指标的发育在大多数年龄纷呈上升趋势，但均低于全国水平（P＜0．01）。机能发育指标，无论城乡男女，绝大多数年龄组均低于1990年本市水平和1995年全国水平（P＜0．01）。结论：重庆市中小学生形态发育存在长期增长趋势，而机能发育较差。
Objective: To understand the status quo and change characteristics of primary and secondary school students in Chongqing. Methods: The survey data of the growth and development of primary and secondary school students aged 7-17 in Chongqing in 1997 were analyzed and compared with the data of 1995 and 1995 of this city in 1995. Results: The male students aged 11-15 years and the female students aged 9-14 years grew rapidly. The growth and development of urban students were better than that of the rural students. There were two crosses in the morphological development of male and female students, and there was no cross in the development of their functions. During the past seven years, the development of morphological indicators showed an upward trend in most age groups, but both were lower than the national average (P <0.01). Indicators of functional development, both urban and rural men and women, the vast majority of age groups were lower than the city in 1990 and the national level in 1995 (P <0.01). Conclusion: The primary and secondary school students in Chongqing have long-term morphological development trend and poor performance.