A printed circuit board testing method includes determining a position of a robot at a predetermined time interval and determining whether the determined position of the robot is within a preset position range. The method determines whether one or more shielding boxes are open according to unique identifiers of the shielding boxes stored in a storage system when the determined position of the robot is within the preset position range. The method obtains a predetermined path of each determined open shielding box from the storage system when one or more shielding boxes are open. The method further determines a shortest predetermined path among the obtained predetermined paths, and transmits a control signal including the determined predetermined path to the robot.