Results and conclusions: Prevalence of Enterobius vermicularis infection among pre-school children were hight at 3 communes (54.7%), and not satistically significant comparison between them each other (58.4% comparison with 53.5% and 52.3%). Prevalence of Enterobius vermicularis infection group 37 - 72 months was higher satistically significant group 12 - 36 months (60.5% comparison with 49.6%), and in female with male pre-school children were equivalent: 52.6% and 55.9%.