The invention discloses a method and a system for realizing automatic demonstration of a robot by using visual and laser distance measurers. The method is characterized by comprising the steps of: obtaining original point position design information of one target demonstration point, and driving the robot to move above the point position; triggering the laser distance measurer to measure the distance, calculating a displacement value of the robot on a Z axle, and shifting an industrial camera on the robot according to the displacement value to enable a Z axle distance from the original point position of the target demonstration point to be the same with a fixed focal distance preset by the industrial camera; triggering the industrial camera to shoot, processing and identifying shot imagesto judge if an actual target demonstration point is shot, identifying real position information of the target demonstration point to store in the robot or a robot control unit if the actual target demonstration point is shot, and otherwise, setting multiple calibration shooting points to renewedly shoot and identify with a point corresponding to the original point position design information as the center. The method realizes full automation of the whole precise demonstration process.