以中华人民共和国卫生部1975年发表的“关于我国正常儿童青少年体格发育调查研究实施方案”为依据,我科对长春市朝阳区1184名7～12岁学龄儿童进行了生长、发育健康调查。根据选样抽查方法,我们选择了三所小学校,一所是工厂子弟学校,生活条件好,学习情况一般化;一所是居民区小学,家庭经济情况一般,学习情况也抓得不很紧;一所是长春市文 Based on the Implementation Plan of Investigation and Research on Physical Development of Normal Children and Adolescents in China published by the Ministry of Health of People’s Republic of China in 1975, we conducted a survey on the growth and development of 1184 school-age children aged 7-12 in Chaoyang District of Changchun. According to the sample selection method, we have chosen three primary schools, one is the factory children’s school, living conditions are good, and the learning situation is generalized. One is a residential primary school where the family economy is generally poor and the learning situation is not sufficiently grasped. One is the Changchun City