To enable a notification instructing a goods management work to be made at an appropriate and effective timing, a goods monitoring device for monitoring a display state of goods based on captured images of a display area in a store includes: a goods detection unit that detects goods in the display area based on captured images of the display area; a goods state detection unit that detects a goods display state in the display area; a person detection unit that detects persons staying in the store; a person state detection unit that detects a person staying state in the store; a notification determination unit that determines propriety of a notification instructing a store staff member to perform a goods management work; and a notification unit that makes the notification based on a result of determination by the notification determination unit.