Objective To explore the influence factors of children's behavior problem in school-age children, and to provide the evidence for promoting healthier children's behavior. Methods The objects of our study included 200 school-aged children in health care clinic (110 boys and 90 girls ), the average age is 7(7±15)years, and we used the CBCL questionnaire to assess all the children's behavior problems. The CBCL questionnaire was finished by the parents of the children guided by the specialized investigator. The data was analyzed by the SPSS 11.0 software. Results The score of boys in compulsivity and disobey is significant higher than girls(P<0.05), and the girls have higher score in depression, social flinch and physical demands than boys(P<0.01). There is no significant difference between different genders in the age of the children. Conclusion Behavior problems of children were affected by many kinds of factors including social environment, family environment and parenting styles. We need to conduct appropriate behavior intervention according to the different behavior characteristics between boys and girls, to promote healthier children's behavior and to reduce the behavior problems of children.