This article discusses the problem of psychological correction of psycho-emotional disorders in older preschool ages. The authors discuss the difficulties of socialization of preschool children with a high level of aggressiveness, features and conditions to overcome these difficulties through the use of various forms of correction and prevention in children. Submitted to various psychological approaches to the study of the topic. Also the article as justification for the activities of the educational psychologist preschool educational institution for the establishment of the social situation of development of children is a portion of the Federal State educational standard of preschool education, outlining the requirements for proficiency in effective technologies for working with preschool children. One of the effective methods of psychological correction of the aggressiveness of the pre-school children supported method directed play therapy. This paper presents a study of the actual level of aggressiveness of children under school age, the characteristic and describes the focus of children's aggression. Identified in the course of the study, children with acute signs of aggressiveness constituted a task force to work psychocorrectional. The basis for developing a programme of psycho aggressiveness "Good hedgehogs" was based on a method directed play therapy. As a result of the psychological correction by the expressiveness of the aggressiveness of senior preschool children, there have been positive changes: reduction of aggressiveness, reducing hidden, including deliberately concealed, aggressive trends focus on peer aggression has fallen, siblings, kindergarten. It is proved that the application of the method of play therapy in psychological correction of aiming the aggressiveness of children under school age leads to a significant reduction of their actual level of aggressiveness.