Abstract: Personal domain is very important for the development of children’s and adolescents’ self, autonomy, social emotions and socialization. Issues treated as personal by children and adolescents include one’s privacy, recreation, choice of friends, and control over one’s body. At present, the study of personal domain has been the important aspect and basis for the study of western adolescents’ autonomy. The author has introduced the characters of the development of the conceptions of personal domain, as well as its effective factors and the relations between personal autonomy and behaviors.

Key words: autonomy, personal domain, social-interaction.