The purpose of this study was to develop and validate a group counseling program for reducing the internet addiction and improving social skills of internet overusing elementary school students. To accomplish this purpose, through reviewing the literature, the factors of the program were extracted. Also the program was constructed following the systematic counseling program development model. And the program was corrected basing on professionals' consultation. The program constructed by this process was consisted of 9 sessions including activities for improving the social skills, self-regulation, interpersonal relationship skills, and communication skills of the internet overusing children. As a result of applying this program to internet overusing elementary school students, it showed that the experimental group was reduced degree of internet addiction and improved social skills compared with the control group. This study was meaningful in that the program was developed for improving social skills of internet overusing elementary school students based on exploring the relationships of internet ddictions and social competence.