The invention discloses a method for opening a communication service, a system and equipment thereof. The method is characterized by: when a user has a demand for the service, initiating a service opening request through a terminal; using an instruction which can be identified by a home location register (HLR) to request the HLR to open the requested service for a subscriber identity module (SIM) card. Because it is not necessary to open the service for a lot of the SIM card, the instructions needed to be processed by the HLR can be dispersed so that instruction backlog of the HLR can be avoided. Simultaneously, according to the invention, according to the demand of the user to the service, the HLR and a service management server are requested to open the corresponding service so that personalized service opening of the user can be realized.