The purpose of this study was to investigate the effect of personality characteristics on drinking patterns and drinking-related problems Subjects were selected through convenience sampling from the two universities in Kyung-Ki area Data were collected from Nov. 1st to Dec. 20th 2000 using a structured questionnaire that including general characteristics, Q-F(Quantity-Frequency) Methods, Personality Scales and Drinking-related Problem Scales. The results of this study show 1. 50.8% of subjects were heavy drinkers. 2. Heavy drinker scores higher on drinking-related problems and amount of smoking than light drinkers. 3. The Drinking patterns and drinking-related problems of heavy drinkers were selected to the influence of a depressive-tendency in personality and the amount of smoking. The results of this study suggest that the drinking-related problems of male university students are selected to the influence of depressive and anti-social characteristics. Therefore, it is necessary that further study on various nursing interventions be done and that personality be taken into consideration in developing programs aimed of preventing drinking-related problems in heavy drinkers.