Ferrihydrite often precipitates with humic acid in natural ways, affecting the fate of lead ions, the stabilization of humic acid and the aging process of ferrihydrite. A series of 2-line ferrihydrite-humic (Fh-HA) acid with varying C loadings has been prepared, the morphology and surface properties of Fh-HA organo-minerals have been characterized, the adsorption property of Pb ions onto Fh-HA has been studied. The results indicated a strong interference of HA to ferrihydrite. 2-line Fh dominated mineral phase in all samples, but with increasing C/Fe molar ratios the crystallinity gradually weakened, particles became smaller and SSA decreased significantly. The data of Mössbauer spectra confirmed C loading changed the unit structure of ferrihydrite. Fh-HA performed good adsorption properties to Pb(Ⅱ): high efficiency and big capacity, especially Fh-HA_2.0. pH had great effect on Lead uptake, the pH change not only affects the amounts of competitive ions in solutions, but also the dissociation and protonation of functional groups on the surface of Fh-HA. Sorption kinetics can be well modeled by a pseudo-second order model, and the process was controlled by film and intraparticle adsorption simultaneously. The adsorption isotherms can be well described by Freundlich isotherm model. The careful determination of Fe 2p, O 1s and Pb 4f spectra before and after lead adsorption showed mononuclear bidentate or binuclear bidentate ligands occurring on Fh-HA surface, forming stable inner-sphere complex. By comparison of Mössbauer spectra and TEM images, it revealed a slower evolution of iron oxide/oxyhydroxide phases in Fh-HA-Pb system compared to pure ferrihydrite with aging time, ferrihydrite transformed to a combination of ferrihydrite, goethite and hematite phases. in this study, the determination of C-Fe interaction, Pb fate influenced by Fh-HA and transformation of ferrihydrite would have a great implication to application of Fh-HA precipitates in remediation for soil or groundwater polluted by heavy metals.