Abstract: To accurately estimate deterioration of a product in which contents is held in a metal container. The deterioration estimate system comprises: a predictive model 3 trained mechanically by a training data 1 collected through storage tests of the product; an inputter 5 transmitting data to estimate deterioration; and a transmitter 4 that transmitting a degree of the deterioration of the product computed by the predictive model 3 based on the data transmitted from the inputter 5. The training data 1 includes: data relating to the metal container of the product; data relating to the contents contained in the metal container; data relating to an environment where the product has been stored; and data relating to the degree of the deterioration of the product.