通过ξ电位、吸附作用规律、药剂基团电负性理论及红外吸收光谱法论述了１羟基２萘羟肟酸对氟碳铈矿的捕收性能及作用机理。１羟基２萘羟肟酸主要是以羟肟基上的两个氧原子与氟碳铈矿表面的Ｒｅ（Ⅲ）形成了Ｏ—Ｃ＝Ｎ—Ｏ—Ｒｅ（Ⅲ）—Ｏ五元环的螯合物而化学吸附，同时兼有多层的、不均匀的物理吸附，吸附方程Γ＝６．７６×１０－２·Ｃ１／１．０２，吸附速率常数Ｋ＝２．６４×１０５ｍ２·ｍｏｌ－１·ｍｉｎ－１。 The catalysis of 1hydroxy  2naphthalene hydroxamic acid on bastnaesite and the mechanism of its action were discussed by ξpotential, adsorption law, electronegativity theory of drug group and infrared absorption spectroscopy. 1-Hydroxy-2-hydroxynaphthoic acid is mainly formed by O-C = N-O-Re (III) -O on the surface of the bastnaesite with two oxygen atoms on the hydroxyl- Elemental chelate and chemisorption, at the same time, it has multi-layer, inhomogeneous physical adsorption, the adsorption equation Γ = 6.76 × 10-2 · C1 / 1.02, the adsorption rate constant K = 2.64 × 105m2 · mol-1 · min-1.