Abstract: In the case of a polychromatic source in X-ray ICT, the phenomenon of scattering takes place.Thus, scattering correction has to be done. According to Compton scattering intensity equation, a theoretical formula of correction of scattered radiation in transmission X-ray industrial computerized tomography was deduced from an ideal model.And the precise accurate models and methods were presented for wiping out the false image efficiently, which resulted from photon scattering.