The purpose of this study was to examine the effects of gratitude expression group art therapy on the intimacy and loneliness of older couples. The study subjects were randomly assigned 7 pairs of an experimental group and a waiting group of 14 older couples who indicated their intention to participate among the elder couples who use D welfare center in G metropolitan city. The study took place from July 1 to September 17 in 2019 with a total of 12 gratitude expression group art therapy session conducted including pre- and post-test once a week for 90 minutes per session. The gratitude expression scale, an intimacy scale, and a loneliness scale were used to verify the program s effectiveness. The collected data were analyzed using SPSS WINDOW 24.0 program. A t-test was performed to verify the homogeneity of experimental group and atmospheric group, and repeated measures variance analysis was performed to verify the effectiveness. Further, statistical results were supplemented through the analysis for the language and attitude changes per sessions. The study results are summarized as follows: First, in examining the effect of gratitude expression group art therapy on intimacy of older couples, the experimental group showed a statistically significant difference than the waiting group in intimacy. Second, as a result of loneliness of older couples, the experimental group showed statistically significant difference in loneliness compared to the waiting group.