An authorization method by an application stored in a memory includes obtaining, by the application, a client identifier of a client that is generated by a user center; performing, based on the client identifier, permission verification on an authorization credential, in response to authorization information being received by the application, the authorization information includes the authorization credential, the authorization credential is sent by the user center to the client; and allowing access of the client to the application in response to the permission verification on the authorization credential succeeding.