Abstract: Maternal and children health care workers paid more attention on children mental health problem recently,which has the characteristics of atypical and damaged profoundly,and the influencing factors contained inheritance、pregnancy and perinatal period、family environment、society and study factor,sand so on.At present,the positive rate of metal and behavior problems among preschool children was 6% to 26%.The study will review the status of children mental health problems and influencing factors,in order to provide reference for maternal and children health care preventing.