The invention discloses a processing method for converting a configuration set, which comprises the following steps: step S202: an access terminal transmits a request message about converting configuration set to an access network; step S204: the access network transmits a refusal message to the access terminal. By adopting the processing method of the invention, the AN (access network) can effectively process the request of converting the set configuration, thus avoiding repeatedly air-interface exchange of relevant technique and enhancing the system efficiency.