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Objective To analyze the prevalence of anemia in preschool children in Bincheng District of Binzhou city and its influencing factors, so as to provide reference for formulating new measures to prevent anemia in children. Methods The health examination results of 10 674 children aged 3~6 from multiple kindergartens in Bincheng District in 2020 were collected, and anemia prevalence was investigated by analyzing the blood routine indicators. Results The incidence of anemia in 10 674 children was 1.95%, with 1.86%(100/5 375)in boys and 2.04%(108/5 299)in girls(P>0.05), with 3.06%(44/1 439)vs 2.93%(43/1 468), 1.79%(37/2 071)vs 2.04%(43/2 107)and 1.02%(19/1 865)vs1.28%(22/1 724)in boys and girls aged 3, 4 and 5, respectively. No significant difference was noticed in anemia incidence between boys and girls in each age group(P>0.05), while significant difference laid between boys and girls among different age groups(P<0.05). The degree of anemia was mainly mild in both boys and girls, accounting for 98.6%(205/208)of the total anemia. The median Hb of preschool children in Bincheng District was 125 g/L(boys 125 g/L vs girls 124 g/L). The median Hb of 5-year-old boys was 126 g/ L, which was higher than 125 g/L of 5-year-old girls. The Hb values of boys and girls were different by age groups, with statistical significance(P<0.05). Conclusion The anemia prevalence in children in Bincheng District decreased gradually with the increase of age. The general survey of anemia in children with younger age is an important step for early detection and early intervention.