This research examined the relationship between attachment and interpersonal problems among Korean Christian adults(N = 154). Using an attachment theory framework, this research explored that how the attachment levels assessed by the Attachment Style Questionnaire (ASQ) were related with their interpersonal distress checked by the Korean Inventory of Interpersonal Problems (KIIP). According to the results, there were significant correlations between the attachment and interpersonal problems. The secure attachment (measured by Confidence subscale of the ASQ) was negatively correlated with the interpersonal problems, whereas the insecure attachments (assessed by the four subscales of the ASQ) were positively correlated with the interpersonal problems. The secure adults were likely to show more selfconfidence and less anxiety in their relationships than insecure adults, while insecure adults tended to reveal more hesitance, discomfort, and worry. The finding of this research offers an additional empirical support to the existing notion that some aspects of psychological maladjustment and clinical symptoms are closely associated with the effects of insecure attachment, along with its contribution to the research data of religious people.