Objective To explore and current stituation related risk factors of blood lead levels in urban children from Hohhot,in order to provide measures for intervention. Methods The stratified random sampling method was used to select 2 009 children aged 0~3 taking regular physical examination,and 1 822 children aged 3~6 from 4 kindergartens in 4 urban areas of Hohhot.The blood lead level was measured by atomic absorption spectrometer,and children's parents were asked to answer a standardized questionnaire. Results The blood lead level of 0 to 6-year-old children in Hohhot was (35.74±21.85) µg/L.The prevalence rate of high lead blood syndrome was 0.23%.No statistical difference was found between the incidence of boys and that of girls (P>0.05),and there was statistically significant difference in blood lead level among the children in different age groups (Pˉ0.001).Multi-factor regression analysis indicated that high frequency of cleaning toys,washing hands before eating and taking Chinese herbal medicine were protective factors of children's blood lead level,but sucking finger and chewing fingernail frequently were risk factors. Conclusion The blood lead level of children aged 0~6 in Hohhot is low.Strengthening health education and changing living habits are important Methods for prevention and treatment of lead poisoning in children at this stage.Regular examination and timely intervention are necessary to decrease damage of lead to children.