This study aims to find what effect group art therapy makes on senior’s communication. An object of study was the general near 60~75 years using A senior's Welfare Center belonging to D Senior Citizen's Association located in G district, 20 people agreed on experiment were randomly assigned to 10 experiment group, 10 controlled group. Group art therapy program applied to experiment group consisted in contents and media encouraging creative activity and sense of accomplishment, was implemented twice a week for 60 minutes each time totaling 12 times. Interpersonal communication scale developed by Bienvenu(1971) was used as measuring tool to consider the effectiveness comparing the change between before and after program. This study's result showed group art therapy makes positive effect on the senior's communication. In each subdomain of the senior's communication, desirable attentive hearing, clear opinion expression, expressing their feeling, opening themselves showed statistically significant result. This means group art therapy made affirmative effect on senior's communication subdomain. This study's significance is for seniors to recognize positive individual lives through creative art activity and is to present group art therapy program for effective communication in family and social relation.