Fecha de publicación: 05/01/2023 Fuente: Wipo Milk or dairy products The present embodiments provide a replenishment quantity determination method and apparatus, a device, a storage medium, and a program product. The method comprises: obtaining the inventory information of a warehouse and the product information of a product stored in the warehouse, and determining a target product; determining a total inventory quantity according to a substitution chain to which the target product belongs; determining a target inventory quantity and an inventory lower limit value according to the product information of a plurality of products included in the substitution chain; if the total inventory quantity is less than the inventory lower limit value, and the inventory usage form of the bidirectional inventory usage relationship of each product in the substitution chain comprises a bidirectional usage relationship, determining a replenishment ratio of the product; and according to each replenishment ratio, the target inventory quantity, and the total inventory quantity, determining the replenishment quantity of each product having the bidirectional inventory usage relationship in the substitution chain. In the solution provided by the present application, the replenishment quantity of each product can be determined according to a substitution relationship between the products, and the replenishment quantity of each product can be determined when there is the substitution relationship between the products, and thus, the product inventory can be effectively managed.