A computer implemented method comprising: receiving a login request initiated by a user at a page, the login request including a login account name and a login password; allowing the user to log in, in response to determining that the login account name and the login password are valid; if the account name and the login password are not valid, acquiring, based on the login account name, a preconfigured account name collection, the preconfigured account name collection including one or more account names of one or more accounts of the user in one or more member systems, the one or more member systems including the member system to which the page belongs, wherein the one or more account names are determined according to each of: a) an account binding relationship between respective accounts in different member systems of the user; b) user information included in multiple accounts that have an account binding relationship; and c) user information in a newly added account, the newly added account causing a quantity of accounts in the preconfigured account name collection to increase; searching for, in the preconfigured account name collection, a matching account name in a member system to which the page belongs, and finding the matching account name in the member system to which the page belongs; prompting the found matching account name to the user for login in response to finding the matching login account name in the member system to which the page belongs; and allowing the user to perform a login attempt using the prompted account name. receiving a login request initiated by a user at a page, the login request including a login account name and a login password; allowing the user to log in, in response to determining that the login account name and the login password are valid; if the account name and the login password are not valid, acquiring, based on the login account name, a preconfigured account name collection, the preconfigured account name collection including one or more account names of one or more accounts of the user in one or more member systems, the one or more member systems including the member system to which the page belongs, wherein the one or more account names are determined according to each of: a) an account binding relationship between respective accounts in different member systems of the user; b) user information included in multiple accounts that have an account binding relationship; and c) user information in a newly added account, the newly added account causing a quantity of accounts in the preconfigured account name collection to increase; a) an account binding relationship between respective accounts in different member systems of the user; b) user information included in multiple accounts that have an account binding relationship; and c) user information in a newly added account, the newly added account causing a quantity of accounts in the preconfigured account name collection to increase; searching for, in the preconfigured account name collection, a matching account name in a member system to which the page belongs, and finding the matching account name in the member system to which the page belongs; prompting the found matching account name to the user for login in response to finding the matching login account name in the member system to which the page belongs; and allowing the user to perform a login attempt using the prompted account name.