Abstract: In order to verify the feasibility of focusing X-ray with the new lobster-eye X-ray focusing structure, the study on design of the new lobster-eye X-ray focusing structure was carried out with Monte Carlo simulation. The circumstances around 80 keV X-ray scattered by different sorts of materials were achieved through Monte Carlo simulation. The results show that most of the photons above 80 keV can penetrate the target material, while some photons are absorbed by the target material through the photo electric effect and a few photons are scattered via the Compton interaction. Meanwhile, the energy spectra of 80 keV X-ray backscattered by different materials can be distinguished clearly, and the details of those materials can be obtained by analyzing the new lobster-eye X-ray focusing images.