Many scholars focus on Mass media and children research in the field of communication .Television media is the most powerful media , so TV media and child study is the focus for mass media and children .In this article, we firstly discuss some concepts of mass psychology , then we com-bine children psychology research history and basic principle to investigate the influence between mass media and psychosocial development of children , such as mass media, children's moral development, modernity, gender role cognition and social behavior acquisition correlation , and mass media how to affect the changes of relationship between children and adults .