The purpose of this study was development of a group counseling program to reduce cellular phone addiction tendency of elementary school students in higher grade and to validate its effect on them. This group counseling program was researched, analyzed, designed, developed and applied. First, it reviewed about studies on Cellular phone Addiction tendency and it surveyed 94 cellular phone addiction tendency of elementary school students in higher grades for actual requirement. Second, it analyzed the number of program session, session’s goal, session sequence. As a result, this program consisted of 12 session. Third, it designed program contents and activities by pooling and warehousing. Forth, it developed final program by pilot test and experts of advice. Fifth, to verify the effectiveness of the developed counseling program, 12 students who desired for the program were included in the experimental group and 12 students who did not participate in the program were in the control group. It was analyzed statistical data by Mixed ANOVA, experience report and counselor observation contents. The results were significant differences in the variance of cellular phone addiction tendency between the Experimental group and the Control group. And there were significant differences in ‘compulsive withdrawal’, ‘difficulty in controlling use’ and ‘dependent tendency’ between two groups. The study suggested that with no previous group counselling programs for elementary school students in higher grade to reduce their tendency of cellular phone addiction, development of such a program reduced the tendency and it might provide school field with a guidance material associated with cellular phone use.