 The study examined the associations between theory of planned behavior, TPB, elements and Chinese citizens' intention to receive COVID-19 vaccines, as well as how gender moderates this relationship. The results showed that subjective norms and perceived behavioral control were positively related to vaccination intention for both genders, while attitudes were only related to males and subjective norms to females. These findings enhanced the utility of TPB in explaining COVID-19 vaccination intention and informed gender-specific strategies to boost vaccination rates. This article was authored by Kaido, Jinyang, Linxinwang, and others.