The Daping granite porphyry intrusion with NbTa mineralization locates in the DashiaoLandi volcanic basin in the south of Yongding, Fujian, which is of certain indicating significance for the existence of porphyry NbTa deposit. In order to reveal meltfluid evolution and enrichment mechanism of Nb and Ta, fluid and melt inclusions in the rock samples from different depths of drilling ZK10001 and ZK10401 were investigated by means of petrography, microthermometric experiments and laser Raman spectroscopy. Aqueous twophase inclusions and silicate melt inclusions present dominantly in Daping intrusion. The homogenization temperatures, salinities and densities of fluid inclusions mainly vary from 175 ℃ to 225 ℃, from 3% to 7% NaCl equivalent and from 075 g/cm3 to 095 g/cm3, respectively. The oreforming fluid of Daping intrusion is characterized by mediumlow temperature, low salinity and low density, roughly belonging to the H2ONaCl system. Melt inclusions which contain albite, quartz and tantalite are mainly distributed in snowball texture in quartz phenocrysts. Homogenization temperatures of melt inclusions are relatively high, which implies that they can represent primitive magma. This study shows that the primitive magma of the Daping intrusion was rich in Nb, Ta and alkaline components and the Daping intrusion with NbTa mineralization was the product of highly fractionated magma. Enrichment process of Nb and Ta can be divided into two stages: phenocrysts formation in deep process and matrix formation in shadow process. At the early stage of phenocryst crystallization, minor amount of niobiumtantalum minerals crystallized along with crystallization of phenocrysts, with some wrapped by phenocrysts. At the late magmatic stage, small volume of fluids exsolved. Volitiles such as F promote the enrichment of niobium and tantalum in residual melt and precipitated within matrix interstice. Occurrence of the Daping mineralized rocks is indicative of possibility of existence of porphyrytype NbTa deposits.