This study aimed to find the effects of the education of self-differentiation on reducing the rate of anxiety in divorced children in Tehran, Iran. It was an experimental study using pre- and post-test on two groups of experiment and control. At the first,we selected randomly one school among the schools in region 6 in Tehran and then we listed the names of divorced children and selected 16 person among 27 divorced children. 16 female students of divorced families in the age of 13-14 years were randomly divided into two groups of experiment and control. Cattle anxiety Inventory was used for data collection. The independent variable was ten sessions of the education of selfdifferentiation conducted for the experiment group and the dependent variable was students’ scores of the questionnaire. Data were analyzed using the one-sided variance test. The results showed that with 95% certainty, the education of self-differentiation has been effective on reducing anxiety of the experiment group.