Objectives: The purpose of this study was to investigate solitary drinker's general drinking behaviour. Also, this study aimed to compare solitary drinker's solitary drinking behaviour according to their risk level of general drinking behaviour. Methods: The subjects of this study consisted of the 2,011 Korean adults whose ages were between 19-69 years. A self-administered online survey was conducted, and the questionnaire was comprised of general characteristics of subjects, general drinking behaviour, solitary drinking behaviour. This study analysed cross-sectional data using an independent t-test and chi-square test. Results: 61.3% of 2,011 subjects had an experience of drinking alone. The results find statistically significant difference in the gender, age, households, education level and jobs between drinking alone and not. Drinkers who had experience of drinking alone had a significantly higher rate of annual alcohol drinking, frequency of drinking, alcohol consumption in the single occasion and harmful use of alcohol than drinkers who didn't have experience of drinking alone. Subjects who had harmful use of alcohol behaviour preferred a beverage with high alcohol content for solitary drinking. They also had a higher frequency of drinking, alcohol consumption in a single occasion, the harmful use of alcohol in a solitary drinking situation. Conclusion: A solitary drinking behaviour is associated with general drinking behaviour, especially their harmful use of alcohol. This study tried to investigate a new drinking culture. Studies that reflect mental health factors and psychological factors associated with alcohol use are needed for future research.