Abstract: Objective To explore the current situation and characteristics of behavioral problems among preschool children in Xi'an street,Bao'an district.Methods The Achenbach Child Behavior Checklist(CBCL) was used to screen the behavioral problems among 7756 Children aged 2-6 years old in Xin'an street,Bao'an district.Results The prevalence of behavioral problems in children aged 2-3 years old was 27.90% with no gender difference(P=0.121).The leading behavior problem was aggressive behavior.In addition,the prevalence of behavioral problems in children aged 4-6 years old was 7.65 % with significant gender difference(P<0.001).The top three behavioral problems were abruption,compulsivity,disciplinary for boys and sexual problem,sociality withdrawal,hyperactivity/abruption for girls.Conclusion To prevent the occurrence of behavioral problems,more targeted intervention measures should be taken for children of different ages and gender.