本文综合了60年代以来，学生肠道寄生虫感染追踪观察情况，现将结果报告如下；1．对象及方法1．1对象：于每年春季进行全校性学生肠道寄生虫粪便普查（74、78年后调查）。1．2方法：采用饱和盐水漂浮法。（74年前是玻片法）。2．结果2．1从表1看到60年代学生肠道寄生虫感染以钩 This article combines the tracing of intestinal parasites in students since the 1960s, and the results are reported as follows: 1. Subjects and methods 1.1 Object: In the spring every year, the whole school students intestinal parasites stool survey (74,78 years after the survey). 1.2 Methods: saturated brine floating method. (A slide method 74 years ago). 2. Results 2.1 Seen from Table 1 in the 1960s students with intestinal parasites were infected with hooks