A guidance device 120 is provided with a processing device 124 that generates a control signal to control a propulsion device 110 of a flying object 100 and a communication device 121 that transmits the control signal to the propulsion device 110. The processing device 124 generates a patrol control signal to control the propulsion device 110 so that the flying object 100 flies along a first patrol path and generates, based on information of a moving object that the flying object 100 is to intercept, an interception control signal to control the propulsion device 110 so that the flying object 100 flies toward the moving object. In addition, the processing device 124 generates, when generating the interception control signal, a notification signal to notify that the flying object 100 flies toward the moving object.