The multi-sensor photoelectric theodolite is an important equipment for the range photoelectric measurement.In order to improve the visualized effect of its image,image enhancement technology is proposed.Firstly,the development trend of the target optical theodolite is analyzed,the principle of optical measurement system of multi-sensor photoelectric theodolite is briefly introduced,the performance of optical system is analyzed.Then the image enhancement scheme is given,various image enhancement algorithm are introduced.At last,an image enhancement algorithm suitable for short wave image is proposed,simulation verification and analysis are carried out.Experimental results indicate that image enhancement technology,used to deal with multi-sensor photoelectric theodolite image,can effectively improve image visualization.