On the issue of the target object location in three-dimensional space, this paper proposes a method to realize binocular visual positioning with monocular, this method is simple, convenient operation and cost-effective. Because SURF algorithm has better performance and indicators in all respects, so we make use of SURF algorithm to realize the image feature point extraction and matching in the process of object target recognition and locating. The experimental result indicates, the method of monocular to realise binocular visual positioning based on SURF algorithm, both in accuracy of positioning, and in speed of time shows good feasibility and practicability, it has a certain practical value.