The purpose of this study is to discover the influence of customer`s awareness toward corporate social responsibility(CSR) activities to service quality perception of the hospital. The survey was conducted on 211 patients at the general hospital in Seoul from April 2 to 30 in 2012. For the statistical analysis of data, ttest, ANOVA, and hierarchical multiple regression analysis were implemented. The results of the study were as follows. First, The personal tendency toward CSR was different by social groups. The elderly showed more tendency toward CSR. Second, there was a statistical significant relationship between the personal tendency toward CSR and the number of perceived CSR activities. Third, the effects of CSR activities were different from the perception of service quality. The awareness of volunteering social activities turned out to be negative factor of service quality perception.