Abstract: Fission fraction of the ²³⁵U, ²³⁸U, ²³⁹Pu, and ²⁴¹Pu of the reactor is needed for the reactor neutrino experiment, but the general lattice calculation programs do not have the function to output the fission fraction. In order to meet the requirement of reactor neutrino experiment, the verification of the DRAGON using in the PWR was performed based on Takahama-3 benchmark. The average deviation of calculation and experimental mass ratio of the four nuclides that be concerned in the reactor neutrino experiment was given. And according to the calculation value of fission fraction and fission energy, the neutrino energy spectrum of NT3G24 assembly in the Takahama-3 reactor was also given. It demonstrates that the feasibility of the DRAGON is used in the reactor neutrino experiment.