Food valid date tracing alarm system and device thereof

The invention discloses a food valid date tracing alarm system and device, and belongs to the technical field of food supervision. Comprising a warehouse-in scanning assembly, a storage assembly and a warehouse-out scanning assembly, information transmission is carried out between the warehouse-in scanning assembly and the storage assembly and between the warehouse-out scanning assembly and the storage assembly, and the situation that products of the same batch are purchased by dealers is grouped and stored; the shelf life feedback assembly is arranged in the storage assembly to give an early warning for food which is about to reach the shelf life, so that dealers can conveniently carry out certain sales adjustment and give an alarm and feed back for the selling condition of food which exceeds the shelf life, and the dealers can recover products in time; a manufacturer and a supervision department can also supervise the dealers selling the expired products in time, and meanwhile, when the expired products app