In order to solve the problem of table tennis picking in the table tennis court, an automatic ball picking robot which main controller based on ARM processor was designed. The suction generated by fan was used by the table tennis picking robot to realize picking up of the table tennis. The table tennis was identified automatically by this robot using the CMOS image sensor. The obstacle avoiding was automatically realized through infrared sensors monitoring of the surrounding environment. The performance testing on the practical model of robot shows that the table tennis picking robot works well, which provide reference for development of other more types of ball picking robots.