Provided are a substrate processing apparatus and a method of displaying an abnormal state of the substrate processing apparatus. The substrate processing apparatus including: a manipulation unit including a manipulation screen displaying a state of at least one of a substrate carrying mechanism and a substrate processing mechanism; and a control unit including a carrying system controller controlling the substrate carrying mechanism. The manipulation unit comprises a setting screen through which detection conditions of sensors configured to detect states of the substrate carrying mechanism and the substrate processing mechanism, and information about a torque limitation including the enabling or disabling of the torque control and a torque control value are set for the substrate carrying mechanism. The carrying system controller assigns a motion of the substrate carrying mechanism to a carrying control module based on an instruction from the manipulation unit, and the carrying control module controls the substrate carrying mechanism according to the instruction and the information.