An object of the present invention is to provide a robot control device that maintains high work efficiency and reduces the possibility of collision between the operator and the robot when they share the work space and perform work. It has a robot control state measurement unit (102 ), which measures the position and posture of the robot, that is, the robot control state; the work area setting part (104), which includes the body occupied by the operator in the operation action from the beginning to the end of the operation process. The area including the space is stored for each work process, and the work area corresponding to the current work process of the operator is set based on the work process specifying signal specifying the work process currently performed by the operator; and The robot instruction generating part (105), which generates an action instruction (105a) to the robot based on the operating area and the robot control state, and the robot instruction generating part (105) responds to the action instruction (105a) of the robot according to whether the robot exists in the operating area. ) to make changes.