根据全国人体寄生虫分布调查结果推算，在约3．1亿14岁以下儿童中，有2亿多儿童感染寄生虫，并以感染肠道线虫为最严重。14岁以下儿童蛔虫、鞭虫、钩虫和蛲虫的感染人数分别为1．9亿、7000万、4000万和8000万[1]。肠道线虫感染对儿童健康和智力都有严重的影响。1对营养与发育的 According to the results of the survey on the distribution of human parasites in the country, more than 200 million children among the approximately 310 million children under the age of 14 are infected with parasites and the most serious is the infection with intestinal nematodes. The number of infections of roundworms, whipworms, hookworms and pinworms in children under 14 years of age was 190 million, 70 million, 40 million and 80 million respectively [1]. Intestinal nematode infections have a serious impact on children’s health and intelligence. 1 pairs of nutrition and development