An inspection system comprising: a flying device including a hammering inspection means configured to perform an inspection by hitting a location to be inspected from a predetermined position relative to the location to be inspected , and a flying means configured to fly with the hammering inspection means mounted on the flying means ; characterized in that it further comprises a ground-side device that is fixedly installed at a position relative to the location to be inspected and is configured to detect a relative position of the flying device , by emitting a laser beam to the flying device and receiving said laser beam after reflection on a corner cube located on said flying device; and a control device configured to receive the relative position of the flying device from the ground-side device , and configured to control, based on the detected position of the flying device , the flying device in such a way that a forwarding direction of the flying device is a direction from the ground-side device to the location to be inspected , whereby the control device is configured to accept the specification of two points on a surface of the location to be inspected , and wherein the control device is configured to calculate a flight path in order to match a forwarding direction of the flying device to a direction being orthogonal to a straight line including the two points and being from the ground-side device to the location to be inspected , and wherein the control device is configured to determine a flight direction to be instructed to the flying device based on the determined flight path. a flying device including a hammering inspection means configured to perform an inspection by hitting a location to be inspected from a predetermined position relative to the location to be inspected , and a flying means configured to fly with the hammering inspection means mounted on the flying means ; characterized in that it further comprises a ground-side device that is fixedly installed at a position relative to the location to be inspected and is configured to detect a relative position of the flying device , by emitting a laser beam to the flying device and receiving said laser beam after reflection on a corner cube located on said flying device; and a control device configured to receive the relative position of the flying device from the ground-side device , and configured to control, based on the detected position of the flying device , the flying device in such a way that a forwarding direction of the flying device is a direction from the ground-side device to the location to be inspected , whereby the control device is configured to accept the specification of two points on a surface of the location to be inspected , and wherein the control device is configured to calculate a flight path in order to match a forwarding direction of the flying device to a direction being orthogonal to a straight line including the two points and being from the ground-side device to the location to be inspected , and wherein the control device is configured to determine a flight direction to be instructed to the flying device based on the determined flight path. <EOS>