| Objective:In this study,a cross-sectional study was conducted to study the behavior of first-born children after the birth of a second child.At the same time,the relationship between co-parenting and first-born children behavior was analyzed.This study provides a theoretical basis for helping first-born children adapt to the changes of family structure,reduce the behavior problems of internalization and externalization,and establish a good sibling relationship.Methods:a convenient sampling method was used to select children and their parents who were hospitalized in the pediatric ward of a third class hospital in Wuhan from November 2017 to March 2018.Children behavior scale was used to study the behavior problems of the first child after the second birth,and the parents evaluated the behavior problems of the children,and the parents’ co-parenting behavior was tested by the parents’ co-parenting questionnaire.The result is 1:1.A total of 110 subjects were investigated,82 were first-born children and 28 were only-child children.2.On the subjects of kicking others and biting others,there was significant statistical difference between the first child and the only child(P<0.05),and the average score of the first child was higher than that of the only child(P<0.05).3.The family income of parents had significant influence on the total score of co-parenting(P<0.05),and the educational background of parents had significant influence on the dimension of supportive co-parenting(P<0.05).4.There was a significant negative correlation between the total score of co-parenting and the total score of behavioral problems in first-born children(p<0.05),a significant positive correlation between the total scores of non-supportive co-parenting and internalization and behavioral problems(p<0.05),and a significant positive correlation between the total scores of supportive co-parenting and behavioral problems(P<0.05).5.Supportive co-parenting and non-supportive co-parenting could significantly predict internalized behavioral problems and total behavioral problems in first-born children(p<0.05).Conclusion:there was no significant change in the behavior of the first child and no significant change in the parents’ co-parenting after the second child was born.Parental co-parenting can have an impact on behavior problems of first-born children,and supportive co-parenting is associated with fewer internalized behavioral problems and general behavioral problems.Parents can improve co-parenting to help first-born children adapt to changes in family structure after the second children birth. |