Based on the analysis of the present testing principle and methods, a novel full-automatic testing design for the resolution is presented. With the three principal technical designs including programmed resolution chart , Cathegreen collimator and CCD image sampler, a unique testing equipment for the resolution of aiming system of laser range finder is developed, which can all be controlled, processed and displayed by computer. Because of small volume, light weight, high computerization and simple operation, the testing efficiency is improved greatly. It has a good prospect to be popularized and applied.