Purposes: This study was to explore the association of socioeconomic vulnerability and problem drinking. Methods: A secondary analysis was conducted using data from Korea National Health and Nutrition Examination Survey((KNHANES) in 2013 and 2015. The workers who aged 30-64 years were included in this analysis and the pooled sampling weights were applied for the statistical analysis. Socioeconomic vulnerability index consisted of education, house ownership, residential area, household income, personal income, single household and occupation. Problem drinking was categorized by Alcohol Use Disorder Identification Test scores. Results: The prevalence of problem drinking was higher in the highest socioeconomic vulnerable group than the group with the lowest vulnerability (Odds Ratio 1.81, 95% CI 1.42~2.57) after adjusting gender. The findings showed that problem drinking was associated with education level, house ownership, residential area, and occupation. Conclusion: Socioeconomic vulnerability index was associated with the lieklihood of being problem drinker. The intervention programs considering socioeconomic vulnerability to prevent harms from problem drinking need to be developed and applied for the vulnerable people.