This study measures library anxiety using K-LAS for senior users, who constitute the smallest part of a public library users group. According to the findings, the overall score of library anxiety was 2.95, which was higher than the score of university students and local residents measured in previous studies. It was analyzed that the anxiety score of 'Digital Information' factor was the highest. In addition, it was found that the anxiety score was high in the old age group and the low education level group. Senior users whose intention of visit was to attend a community class and frequency of visit was lower showed higher library anxiety. This study suggests a method to reduce library anxiety of senior users, based on the analysis findings.