Abstract: As an important technological method, irradiation material modification has b een widely used in industrial production and material modification. The effect of different absorbed doses of 732 cation exchange resin on the exchange capacity of uranyl ions under electron beam irradiation was studied. Using 10 MeV linear accelerator, the resin is irradiated under different absorbed doses through controlling the accelerator process parameters. The rationality of the method was verified in experiments. Meanwhile, the exchange capacity of 732 resin foruranyl ions was calculated in the static exchange method for different absorption doses. In the end, using GEANT4 to calculate the simulated absorbed dose, and results showed that it had guiding significance.