The invention relates to a single sign-on method, a device, computer equipment and a storage medium; the method comprises the following steps: obtaining a user visiting user terminal ID and redirecting an address; obtaining a user authorization condition; determining whether the authorization condition is to give a user terminal authorization or not; if yes, directing the user to a predetermined redirecting URI, thus obtaining a standard redirecting URI; attaching a standard authorization code on the standard redirecting URI; obtaining a claim token request and to-be-verified information fromthe user terminal; determining whether the to-be-verified information satisfies with requirements or not; if yes, sending an access token according to the claim token request; redirecting a page to avisiting application page, and allowing the user to access the business resource via the access token. The method and device can provide uniform authentication services for each business server, and can provide a uniform sign-on entrance, thus facilitating user uniform sign-on requirements and safe managements on different business servers, and enhancing the user usage experiences.