A method for triggering a terminal group, characterized by comprising: a network side sending a group triggering message to each terminal of the terminal group, wherein the each terminal of the terminal group is in offline or idle state, and wherein the group triggering message is used for indicating each terminal of the terminal group to connect to the network, so as to synchronously trigger all the terminals of the terminal group, and the group triggering message comprises a Group Identification, GID, of the terminal group or a terminal identification set of the terminal group; and each terminal of the terminal group establishing connection with the network according to the group triggering message; wherein the network side sending the group triggering message to each terminal of the terminal group, wherein the group triggering message is used for indicating each terminal of the terminal group to connect to the network, comprises: the network side sending the group triggering message to each terminal of the terminal group by broadcasting, wherein the group triggering message is used for indicating each terminal of the terminal group to connect to the network; wherein before the network side sends the group triggering message to each terminal of the terminal group, the method comprises: the each terminal of the terminal group accessing the network, wherein the each terminal of the terminal group is subscribed as the terminal with a Group Based Addressing characteristic that is set and activated in the subscriber data of the terminal group, the Group Identification, GID, of the terminal group is distributed for the terminal group, and the each terminal of the terminal group acquires and saves the own subscriber characteristic parameter and the GID of the terminal group which the each terminal belongs to, and the subscriber characteristic parameter represents whether the terminal has the Group Based Addressing characteristic. a network side sending a group triggering message to each terminal of the terminal group, wherein the each terminal of the terminal group is in offline or idle state, and wherein the group triggering message is used for indicating each terminal of the terminal group to connect to the network, so as to synchronously trigger all the terminals of the terminal group, and the group triggering message comprises a Group Identification, GID, of the terminal group or a terminal identification set of the terminal group; and each terminal of the terminal group establishing connection with the network according to the group triggering message; wherein the network side sending the group triggering message to each terminal of the terminal group, wherein the group triggering message is used for indicating each terminal of the terminal group to connect to the network, comprises: the network side sending the group triggering message to each terminal of the terminal group by broadcasting, wherein the group triggering message is used for indicating each terminal of the terminal group to connect to the network; wherein before the network side sends the group triggering message to each terminal of the terminal group, the method comprises: the each terminal of the terminal group accessing the network, wherein the each terminal of the terminal group is subscribed as the terminal with a Group Based Addressing characteristic that is set and activated in the subscriber data of the terminal group, the Group Identification, GID, of the terminal group is distributed for the terminal group, and the each terminal of the terminal group acquires and saves the own subscriber characteristic parameter and the GID of the terminal group which the each terminal belongs to, and the subscriber characteristic parameter represents whether the terminal has the Group Based Addressing characteristic.