This study was focused on improving emotional intelligence that would help adolescents cope with stress in a positive way. Research Problem to research the effect of the play-based program for improving emotional intelligence, a total of 10 female freshmen at high school were given Emotional Intelligence Test, Stressor Test and Stress Copying Types Test as pre-test. The experiment group received 10 sessions of the play-based emotional intelligence improve program for 70 minutes. In order to verify the effects of pre-test and post-test, data were arranged by Mixed Design Variance Analysis. The results reported that first, the play-based program for improving emotional intelligence were elevated the emotional intelligence of experiment group. second, the play-based program for improving emotional intelligence reduced stress causes of the participants in experiment group. Third, the play-based program for improving emotional intelligence improved stress coping ability of the participants in experiment group. The change of behavior responses were increased during the sessions.