In order to discuss the characteristics of the tectonic alteration zone and the origin of the fluorite deposit in Daping, North Fujian, the characteristics of major, rare earth and trace elements in the tectonic alteration zone of Daping fluorite deposit are studied. The results show that the alteration of Daping fluorite ore is mainly consisted of sericitization, silicification and fluorite mineralization, and that the fluorite mineralization zone is characterized by low total rare earth elements, enrichment of heavy rare earth elements and high CaO and F contents. According to the ore structure of fluorite mine and its alteration characteristics, it has proved that the Daping fluorite deposit consists of at least three ore-forming stages, and belongs to the post-magmatic mesothermal-epithermal filling type.