A method was proposed to eliminate the distortion of targets beyond the depth of field (DOF) in integral imaging systems and improve the overall effect of the reconstruction. First,the relationship of the diffuse spot diameter in the integral imaging system was analyzed through ray tracing, and the DOF range of the system with reference to the visual characteristics of the human eye was obtained. Then, in the case of a fixed collection device, the depth of the three-dimensional target beyond the DOF range was adjusted according to the actual depth value used as the reference value to obtain an element image using a look up table. Finally, the reconstructed image without distortion was obtained in the reconstruction stage. Experimental results demonstrate that the targets within the range of the acquisition DOF can be clearly reconstructed, thus verifying the efficacy of the acquisition DOF model. According to this model, the reconstructed image could be obtained using the depth adjustment method. Its color similarity with the two-dimensional color map increases from 67.057% to 94.507%. The SSIM increases from 54.002% to 84.510%, and the PSNR increases from 16.902 to 19.740. This method clearly eliminates the distortion in the reconstruction of objects beyond the DOF range and is suitable for resolution-first integral imaging display technology.