Abstract: A shelf life monitoring system for perishable products of different types comprises a low-temperature display cabinet, a point of sale terminal, and a server, connected through a network. During the storage, the server can determine whether the storage condition required for a perishable product is the same as the storage condition of the low-temperature display cabinet which the perishable product is stored. The server can further determine whether the low-temperature display cabinet is operating normally, and issue alerts as to potential reductions in shelf life of the perishable product when abnormal conditions occur. The server can also periodically check for any life-expired food and notify the point of sale terminal to identify and process a life-expired product in certain ways.