Abstract: Surveys on intestinal nematode infection were conducted in 65 monitoring sites in Nanjing City during 2004-2008. Eggs in stool samples from 46 226 residents were examined by modified Kato-Katz thick smear method in the 5 years. The prevalence was reduced from 3.0% in 2004 to 0.7% in 2008, decreased by 75.3%. The prevalence in rural area （2.9%） was higher than that of city （0.9%） （χ2=1 024.63, P＜0.01）. The highest prevalence was in the group of under 10 years （5.2%） （χ2=331.18，P＜0.01）.

Key words: Intestinal nematodes, Prevalence, Nanjing