As the usage of smartphones increased rapidly due to the popularization of smart phones, it appears that the average daily usage time of Korean people was 3 hours and 39 minutes, and it was analyzed that the twenties uses 4 hours 41 minutes longer than the average (Jung, 2015). It, also, was found that users mainly use smartphones for receiving information retrieval, social network sites (SNS) activities, listening to music, watching games, and watching videos. In consequence, various contents suitable for smartphones are increasing rapidly. In particular, the number of users who are engaged in SNS activities through smartphones is rapidly increasing and its influence is gradually getting bigger. (Park & Lee, 2012). SNS activities provide content that gives entertainment in a short time and at the same time make consumption regardless of time and space like in subways or cafes, and also stimulate users through visual elements. The content that can be enjoyed in 10 to 15 minutes like snacks, which are easily eaten regardless of time and space, is called 'snack culture'. (Ko, 2015) According to Cheil Worldwide, 2000 media outlets for men and women aged between 13 and 59 living in major cities across the country, the phenomenon of easily consuming short videos, web cartoons, and web novels appeared noticeably. As a result of investigating the main purposes of smartphones, the use of relatively short contents such as SNS has increased (Bae, 2015). SNS provides users with simple contents similar to snacks, and users tend to use SNS as a leisure activity by using these services in 'leisure time' which is the time of their spare time. In this way, as the number of SNS steadily increased, SNS activity has also naturally increased. Consequently, as the SNS market has rocketed among various activities, the e-commerce using it is become popular. This type of consumption activity is called leisure spending (Cho & Do, 2010). Thus, it is necessary to analyze whether consumers view SNS activities as part of their leisure life. Although there are a lot of active consumption activities happening in consequence of using SNS after the spread of smartphones, there is very little research done on the relationship between SNS activity and the leisure life. This study, therefore, intends to conduct in-depth interviews on twenty women in their twenties and thirties who are actively engaged in consumption activities in the SNS market, on the issue of whether they acknowledge SNS activities and consumption behavior in the SNS market as recreational activities. The purposes of this study are as follows: first, to find out the meaning to SNS activities as a leisure activity to female consumers of the twenties and the thirties; second, to explore the approaching process and motivation of leisure life extending to leisure spending; third, to examine the relation between experience of commitment and leisure satisfaction through previous research and in-depth interview In addition, this study is the cornerstone of research on SNS market which is becoming an issue as one new consumption trend and which recognizes consumption activity that happens in the market as leisure consumption in reference to leisure. It is considered to be utilized variously when establishing marketing strategy of fashion companies, which will use image consumption based SNS later.