The X-ray phase-contrast imaging method, which images the object by recording the phase change after X-ray passing through the object, is a new X-ray imaging technique. This new imaging method can provide higher contrast and spatial resolution than the conventional X-ray absorption imaging method. Diffraction enhanced imaging (DEI) method is one of the four phase-contrast X-ray imaging techniques. DEI method can extract the absorption, refraction and extinction information of the object with an analyzer crystal placed between the object and detector. DEI method is combined with the computed tomography (CT), EDI-CT, to construct the insect sample——a bee with its absorption, extinction and refraction information with filtered back algorithm and Radon transform method. The results obtained by DEI-CT are better than the absorption CT, and proves that the DEI-CT is superior to the conventional CT.