With the expansion of smart device users, it is becoming more common to use the Internet without time and space constraints daily, and the number of SNS users continues to increase. With the expansion of the use of the SNS, interest in the SNS market, which has rapidly emerged through the SNS, is also constantly increasing. Thus, the purpose of this study was to analyze the satisfaction and reuse intention of the SNS market targeting subjects age 20s-30s who have used the SNS market. The main results are as follow: First, the higher the attitude of use, playfulness, information provision, and reliability, the higher the satisfaction of the SNS market. Second, the higher the level of satisfaction, subjective norms, and use attitude of the SNS market, the higher the reuse intention, whereas the higher the social risk, the lower the reuse intention. Third, the total causal effect of the variables that influenced the intention of reuse was the highest in satisfaction, followed by use attitude, subjective norms, playfulness, social risk, information provision, and reliability.