Exploring the influencing factors of users’ self-disclosure behavior in online video communities can help improve the management of user personal information disclosure, and improve user activity and stickiness. Using MOA theory as the theoretical foundation and bilibili as the research context, this study explores the influencing factors of online video community users’ self-disclosure behavior from three dimensions: motivation (M), opportunity (O), and ability (A) through second-hand objective data capture including 1,453,652 effective users. This study has found that financial rewards, social support, and user status-standing all have a significant positive impact on users’ self-disclosure behavior. In contrast, peer recognition has a significant negative impact on users' self-disclosure behavior. In independent zones such as technology zones, sports zones, and knowledge zones, peer recognition has a significant positive impact on users’ self-disclosure behavior. Research can provide suggestions for privacy policy formulation and precise push of online video community platforms.