A method and apparatus for authenticating identity

The embodiment of the invention discloses a method and a device for authenticating an identity. A specific embodiment of the method comprises the following steps: receiving a connection request representing that a terminal applies for connection to a target server, the connection request comprising authentication information of the target server and identity information of the terminal, and the authentication information comprising an identifier of an identity provider for verifying the identity information of the terminal; generating a first verification result representing whether the authentication information verification is passed according to whether authentication verification information matched with the authentication information in the connection request exists in a preset authentication verification information set; and determining whether to send terminal identity verification information to the identity provider based on the first verification result, the terminal identity verification informatio