小学低年级学生是进行健康教育，培养良好卫生习惯，建立自我保健意识，帮助他们选择健康生活方式的最佳时期。为此，北京芳家胡同协作组（六校）于1998年2月至5月对一年级431名学生及其家长进行口腔卫生知识讲课前后的问卷对照调查。1对象与方法1．1调查对象六校一年级学生和 Primary school juniors are the best time to conduct health education, develop good hygiene habits, establish self-care awareness, and help them choose a healthy lifestyle. To this end, the Beijing Fangjia Hutong Collaborative Team (6 schools) conducted a questionnaire survey of 431 students in the first grade and their parents before and after lectures on oral hygiene from February to May 1998. 1 objects and methods 1.1 respondents six school first-year students and