Data access method and device

The invention discloses a data access method and device, when user equipment needs to transmit data to a data server, a data access request is sent to the data server, and the data access request comprises an account number and a password of the user equipment. After the data server receives the data access request, the data server authenticates the data transmission request by using the locally stored account and password so as to send an authentication passing message to the user equipment after the authentication passes, so that the user equipment can transmit data to the data server. Namely, an authentication function is deployed in the data server, the login information (account number and password) required during authentication is acquired from the authentication server, the authentication operation is executed by the data server, the authentication server does not need to be accessed, and the authentication efficiency is improved. Therefore, when a plurality of data servers are attacked, the operation