Purpose: The purpose of this research is to investigate the effect of the praising activity program on hope and self-esteem of adolescents. Methods: From Jan 26th to 29th 2009, 193 of subjects were participated in investigation in G city. After 4 days of data collecting in praising activity program, research is the pre and post similarity test to investigate hope and self-esteem of adolescents. Results: The average hope score of adolescents significantly increase from 3.39 before the program to 3.60 after the program. The average self-esteem score of adolescents significantly increased(p<.001) from 3.01 before the program to 3.15 after the program. From the results, the program showed that it has significant effect on hope and self-esteem of adolescents. Conclusion: The praising activity program as an affirmative mass psychological program is confirmed that it affects on hope and self-esteem. Therefore, it is expected to be utilized as promotion of health program for adolescents.