Abstract: The mechanics of hard X-ray interaction with materials were analysized in the paper. A program was composed under the Visual Fortran based on the EPDL cross section data.The attenuation and absorption coefficients for various target materials and various photon energy ranges can be obtained, and the energy deposition profile can also be calculated. Benchmark problem and some other calculation were compared to MCNP result. The result shows that the program is applicable in the radiation hardening study.