Ambedite XAD-4 polymeric resin was chemically modified with an amino group,which enables the resin (NDA-100) to be used directly without a wetting process．The adsorption thermodynamic and kinetic behaviors of phenol and p-hyamxybenzoic acid on NDA-100 were studied．A batch sorption experiments showed that NDA一100 resin had high sorption capacities for both phenolic acids Equilibrium adsorption data fitted to both Langmuir and Freundlich isotherms in the studied concentration range．Adsorption was exothermic and basically of physical character．Kinetic analysis showed that the adsorption reaction could be approximated by a Lagergren pseudo-second-order-rate equation for which intraparticle diffusion was the essential rate-controlling step．