Invoice information security management method and device, equipment, medium and product

The invention discloses an invoice information security management method, device and equipment, a medium and a product, and relates to the technical field of data security. The method comprises the following steps: firstly, extracting multi-dimensional feature data of each stored invoice based on image information of all stored invoices, and then clustering by applying a K-means clustering algorithm based on a data extraction result to obtain centers of a plurality of invoice categories; based on the distance between the to-be-stored invoice and the center of each category, the distance between each scored invoice and the center of each category and the importance score value of each scored invoice, calculating to obtain an importance score estimation value of the to-be-stored invoice; and finally, determining a data security storage strategy matched with the importance of the invoice according to the affiliation between the importance score estimated value and the plurality of importance score ranges, and s