From this perspective, this paper studies the folk beliefs and religions in Zhoushan. Taking Dinghai County as the investigation center, combined with the investigation of local temple fairs in Zhoushan, this paper analyzes the existing situation of folk beliefs in Zhoushan temple fairs. The thesis is divided into three parts. The first part introduces the prominent temples in Dinghai County Records. The second part analyzes the Chenghuang Temple in Zhoushan and classifies it according to several sects. The third part counts and summarizes the ancestral temple beliefs in Zhoushan area. Then through the temple fairs, religious beliefs and religious beliefs in Zhoushan area, the cultural characteristics of the people in Zhoushan area are studied.