目的　了解南通市寄生虫病对人群的危害程度 ,为开展寄生虫病防治工作提供科学依据。方法　查阅、核实 1991～ 2 0 0 1年市直医院和 6个县 (市 )乡镇中心医院以上共 4 9家医院的住院病历 ,予以分析处理。结果　 1991～ 2 0 0 1年全市因患寄生虫病而住院 2 312例 ,其中土源性线虫病占99.2 % ,患者年龄最小为 11个月 ,最大为 82岁。各年龄组均以蛔虫病最高 ,分别占总病例数的 71%～ 95 %。结论　肠道线虫病对人体危害依然存在。低年龄组是肠道线虫感染的重点人群 ,因而是防治的重点对象。应在中、小学校广泛开展健康教育 ,改变学生的不良卫生习惯。 Objective To understand the extent of the damage caused by parasitic diseases in Nantong City to provide a scientific basis for the prevention and control of parasitic diseases. Methods To check and verify the inpatient records of 49 hospitals above Shanghai Zhizheng Hospital and 6 counties (cities) Township Central Hospital from 1991 to 2001 and analyze them. Results In the period from 1991 to 2001, there were 2 312 hospitalized patients suffering from parasitic diseases, of which 99.2% were echinococcosis. The youngest patient was 11 months and the maximum was 82 years old. Ascariasis was the highest in all age groups, accounting for 71% ~ 95% of the total cases. Conclusion Gut nematodes are still harmful to humans. Low age group is the focus of intestinal nematode infection, which is the focus of prevention and treatment. Health education should be widely carried out in primary and secondary schools to change the students’ bad hygiene habits.