The purpose of this study set drinking motivation as independent variable and drinking behavior composed of quantity, frequency and alcohol dependence of drinking as dependent variables to investigate the factors affecting the drinking behavior of college students. Also, The moderating effects of drinking expectation was examined to investigate the interaction effect between drinking motivation and drinking behavior. For this research, we investigated university students in Gangwon area. Statistical analysis was performed using descriptive statistics, validity and reliability analysis, and hierarchical regression analysis using by SPSS 21.0. As a result, it was found that social motive and coping motive, which are sub-factors of drinking motivation, had negative(-) influence on drinking behavior (p <0.01) and the enhancement motive was positive(+) influence(p <0.10). Also, the conformity motive for synchronization was not statistically significant. Following that, as a result of analyzing the moderating effects of drinking expectation, it was found that the negative drinking expectation was not statistically significant between the drinking motive and the drinking behavior, and the positive drinking expectation was positive(+) interaction effect between social motive, coping motive and drinking behaviors, sub-factors of drinking motivation. Finally, we analyzed that there is a interaction effect of negative(-) influence between conformity motive and drinking behavior, and we judged that the moderating effect between enhancement motive and drinking behavior was not statistically significant.