This movable robot includes a robot arm which performs an operation for a machine tool, a carriage for moving the robot arm to a predetermined installation position, a vision sensor which is supported by the carriage together with the robot arm and which captures an image of recognition information provided on the machine tool when the robot arm is placed at the predetermined installation position, a partner information receiving section for receiving a partner information regarding the machine tool for which the robot performs the operation, and a controller which determines whether the information obtained from the vision sensor corresponds with the partner information when the robot arm is placed at the predetermined installation position by the carriage, and when it corresponds, the robot arm is set to be a state in which the robot arm can perform the operation.