The present invention discloses a method for resolving and accessing a selected service in a Wireless Local Area Network (WLAN), wherein a service resolving unit is preconfigured for initial access, the method comprising: a WLAN user terminal sending a service establishing request to the service resolving unit; after receiving the service establishing request, the service resolving unit sending a service authentication and authorization request containing the user's subscription information to the service authentication authorization unit, which performs authentication and authorization to the requesting WLAN user terminal; then judging whether the authentication and authorization is successful, if yes, the service authentication authorization unit returning the address of the authorized destination device to the requesting WLAN user terminal so as to establish a service connection between the WLAN user terminal and the destination device; otherwise, the service authentication authorization unit returning the failure information of the service establishing request. With this method, the analytical access processing of the selected service can be simplified while the security and reliability of the network greatly enhanced.