Using the survey data of 36,989 responses obtained from the 2009 Social Statistics Survey, this study analyzed the relationship between domestic tourism and outbound tourism in Korea. In order to analyze the relationship, this study employed the bivariate probit and bivariate count regression as a naive model. Results showed that bivariate and count data probit models were better than the single probit model in terms of the model fit. Previous literature, which used a survey conducted in 15 European countries(EU-15) reported that the relationship between the demands was more likely a substitution pattern. However, results of this study showed the relationship between domestic tourism and outbound tourism in Korea was found to be complements. Implications and future research directions were also discussed.