The accuracy of laser range finder based on CCD can be effectively improved by pixel subdivision. There are mant pixel subdivision algorithms, and each has advantages and specific application. However, according to the specific range finder, there is no effective mean to evaluate which algorithm is better comprehensively. Hence, a comprehensive evaluation method is proposed, which is based on analytic hierarchy process (AHP) and is used to evaluate the pixel subdivision algorithms. This method is based on actual positioning precision, variance and range of the pixel subdivision algorithms in the proximal, the middle and the distal of measuring range of the laser range finder. And it constructs the comprehensive evaluation model by AHP. According to the method, the applicability of the dichotomy, weighted centroid, weighted polynomial interpolation and center from the proportion algorithm for the specific range finder is analyzed by experiment. The experimental results show that the method can be used to obtain the optimal pixel subdivision algorithm for specific range sensor effectively.