Abstract: The macroporous silica SBA-15 as the hard template, a novel functionalized carbonaceous magnetic mesoporous composite (FCMMC) with highly ordered mesoporous structure was obtained using ferric nitrate and glucose as the precursors via one-step nanocasting followed by in-situ polymerization reaction, and using organic reagents UPTS and APS after grafting modification on its surface. FT-IR and N₂ adsorption-stripping experiment were used to characterize FCMMC, and the factors impacting the adsorption of uranium on FCMMC were investigated including pH value, initial concentration of uranium ions, FCMMC dosage and adsorption time. The results show that the carbon and iron resource are successfully loaded on the mesoporous silica substrate, respectively. And FCMMC has high specific surface area and narrow pore size distribution. The optimal adsorption conditions are as following: The pH of the solution is 6.0, initial concentration of uranium ions is 25 mg/L, the FCMMC dosage is 40 mg and the adsorption time is 1.0 h. The kinetic model can be described by the pseudo-second-order model well, and its correlation coefficient is above 0.99. The isotherm model is fitted to Langmuir adsorption model, and the maximal theoretical adsorption capacity is 128.69 mg/g. At the same time, the adsorption rate is over 80% after FCMMC regenerated 8 times using three different desorption agents. This shows that FCMMC has good regeneration performance.