中学生正处在青春发育期，同时也是结核病好发年龄组。为掌握我市中学生肺结核的患病情况，现将１９９７年７所中学的调查资料分析如下。１资料与方法１．１资料市防疫站１９９７年１月～１２月调查资料。１．２方法对各校学生进行Ｘ线胸部普透，发现可疑阴影者作ＰＰＤ试验， Middle school students are in their early stages of development, and are also well-known age groups for tuberculosis. In order to grasp the prevalence of tuberculosis in secondary school students in our city, the survey data of seven middle schools in 1997 are as follows. 1 Materials and Methods 1.1 Information City epidemic prevention station January-December 1997 survey data. 1.2 Methods Students in all X-ray chest and found suspicious shadow for PPD test,