The test of object displacement is always an unavoidable problem in the engineering field. The method of using traditional holographic interferometry to test the displacement of objects is complicated and the accuracy of measurement results is low. The digital hologram is a digitalization information process technology combining traditional holography and modern electronic technology. The process of digital holographic recording and reconstruction is realized through combining charge-coupled device (CCD) with electrically addressed liquid crystal display (EALCD). Digital imaging processing technology is used to record and process holographic images to avoid traditional chemical processing. The quality of the reconstruction images is improved and the needed information is extracted. On the basis of theoretical analysis of digital holographic experiments, Fresnel holograms about reflecting measured objects are recorded and reconstructed, the clarity of the images and the contrast of holographic interferogram is significantly improved.