In order to evaluate the effectiveness of teaching theory of mind reducing the emotional and behavioral problems in preschool learners 40 are selected and randomly were assigned to two experimental and control groups. All subjects completed all the tools they study on two occasions 9 group therapy session, passed. A questionnaire was used to collect data emotional problems. Data using analysis of covariance with repeated measures analysis of variance (ANOVA) and were analyzed. The results showed that the effectiveness of teaching theory of mind preschool learners is effective in reducing emotional and behavioral problems and Also according to the research findings, theory of mind training effectiveness in reducing emotional and behavioral problems in preschool learners have a lasting effect over time as well.