Abstract: The present application provides a method and a means for backfilling data. It comprises: associatively sending user input data in the first page of the terminal and the identifiers of the input boxes in said first page to a server for them to be stored by said server, with the stored content mapping to the sessionID of said terminal and to the identifier of said first page; when said first page is returned to from a second page, sending a data acquisition request to said server, said data acquisition request comprising the sessionID of said terminal and the identifier of said first page; receiving said first page user input data and the associated identifiers of the input boxes in said first page sent back by said server according to said data acquisition request, and taking said first page user input data and backfilling it into the corresponding input boxes in said first page.