The purpose of this study was to investigate relationship between anxiety and sleep during the COVID-19 period. To this end, online survey was conducted on 213 adults in the Gyeongbuk P region. Anxiety, sleep quality, insomnia and total sleep time during the COVID-19 period, sleep quality, insomnia and total usual sleep time were examined. One-way ANOVA was conducted to examine the difference in sleep quality, insomnia, and total sleep time according to the level of anxiety during the COVID-19 period and a paired sample t-test was conducted to verify the difference in sleep quality, insomnia, and total sleep time between the usual time and the COVID-19 period. Multiple regression analysis was conducted to examine the effects of sleep quality, insomnia and total sleep during the COVID-19 period on anxiety. As a result, all participants experienced a high level of anxiety than a minor during the COVID-19 period. Likewise, there were significant differences in sleep quality, insomnia, and total sleep time depending on the level of anxiety. In addition, a comparison between the usual sleep and sleep during the COVID-19 period revealed significant changes in sleep quality, insomnia, and total sleep time. Also, sleep quality and insomnia of the COVID-19 period affected anxiety. The implications and limitations of these results were discussed in the current study.