Micro-mouse is an autonomous mobile robot(AMR) with self-maze search, the short sprint after the search, sensing and controller. In this paper, the maze search algorithm is designed and implemented based on the central method. The method and maze search process was optimized. Experimental results proved that the optimized algorithm improves on the efficient of the original method, and it has a better local effect. Finally, compared with other algorithms, we found that the central method is a very efficient maze search algorithm