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A dual operational modes mobile robot system based on visual guiding and visual servo control is presented.This system consists of a mobile robot with a two-axis manipulator and a tele-operation station.In the visual guiding mode,for the robot works in an open loop visual servo control mode,the manipulating burden of the operator is reduced largely.In the visual servo mode the robot can locate the position of the target assigned by the operator and pick it up by its manipulator.With the help of the operator,the difficult problems of finding and handling a target in a complicated environment by the robot Can be solved easily.