Tennis ball-picking robot is various in kind; ball-picking way mainly divides into recirculation principle, proximity principle and shortest path optimization principle such three kinds. At present, world developed achievements can let robot to pick up random dispersion of tennis. The paper makes use of analytic hierarchy process, it analyzes ball-picking robot different walk path that is picking way, by establishing hierarchical analysis indicators, it researches on ball-pickingrobot paths differences caused influences, and makes preliminary theoretical basis for path researching directions. Final result thought that shortest path optimization principle has more practical significance in researching significance and development prospect.