A shelf inventory management system includes: a shelf including storage boxes that is each identified; a first sensor that detects a mass change of the storage boxes; a management unit that manages an inventory of an article stored in each storage box, based on a detection result of the first sensor; and a terminal for notifying a user of information related to the article stored in each storage box. The management unit stores the article stored in each storage box and an expiration date related to consumption of the article in association with each other, and outputs to the terminal reminder information for notifying that the expiration date of the article is approaching, when a period until the expiration date of the article not detected by the first sensor falls below a predetermined standard.