the tcp message which requests for subscription or unsubscription sent from the national wap portal protocol conversion module and then stores the tcp message which requests for subscription or unsubscription in the tcp message queue and manages the queue step 206 the provincial wap portal protocol conversion module converts and packages the tcp message which requests for subscription or unsubscription into the corresponding webservice message which requests for subscription or unsubscription according to the preset conversion rule and sends the webservice message which requests for subscription or unsubscription to the provincial wap portal step 207 the provincial wap portal performs relevant process of the subscription or unsubscription of the user according to the received webservice message which requests for subscription or unsubscription and then returns the processing result of the subscription or unsubscription to the provincial wap portal protocol conversion module via a webservice message step 208 the provincial wap portal protocol conversion module matches with a tcp message corresponding to the webservice message of the processing result in the tcp message queue according to the webservice message of the processing result received from the provincial portal converts and packages the webservice message of the processing result into the tcp message of the processing result according to the preset conversion rule and returns the tcp message of the processing result to the national wap portal protocol conversion module step 209 the national wap portal protocol conversion module matches with a webservice message corresponding to the tcp message of the processing result in the webservice message queue according to the tcp message of the processing result.