Xiangshan ore field in Jiangxi Province is a representative hydrothermal uranium ore field in China.Describing the evolution of uranium metallogenic hydrothermal fluid in Xiangshan ore field and exploring its formation mechanism is of great significance for promoting innovation and breakthroughs in the theory of hydrothermal ore deposit mineralization, and advancing the development of ore deposit studies.However, due to the lack of deep understanding of the mineralization stage and mineralization dynamics mechanism, the evolution of uranium metallogenic hydrothermal fluid in Xiangshan ore field has been a weak link in the study.This paper discusses the hydrothermal process from filling mineralization to metasomatism mineralization in Xiangshan ore field by redeveloping existing ore analysis data and re-observing the macro and micro phenomena, with hydraulic fracturing uranium mineralization as the main focus. The study shows that the main hydrothermal uranium veins in Xiangshan ore field are composed of filling type mineralization and metasomatism type mineralization.Filling type mineralization has high grade and small scale, with K₂O content of 0.88%~7.03% (average 4.03%) and Na₂O content of 0.12%~1.09% (average 0.35%), complex associated components, small apatite particles, and fast mineralization rate. Metamorphic type mineralization is low grade and widely distributed, with K₂O content of 0.09%~4.50% (average 1.15%), Na₂O content of 1.91%~10.01% (average 6.07%), few associated components, good crystallization of apatite, and slow mineralization rate. Uranium mineralization begins with filling type mineralization and ends with metasomatism type mineralization. The temperature of uranium mineralization does not change much, and the ore-forming pressure and redox potential show a gradual increase process. The ore-forming hydrothermal fluid evolves towards an increase in alkalinity.