Based on the theory of positive psychology, this paper takes Douyin short videos as an example and explores the inheritance methods of Nanchang dialect through a questionnaire survey. The study finds that strategies such as creating content that stimulates positive emotions, promoting user participation and dissemination, and strengthening the evaluation of communication effects can effectively enhance the inheritance effect of Nanchang dialect. From the perspective of positive psychology, this paper constructs ideas for promoting and protecting local traditional culture, providing a path for the inheritance of dialects.