A method for implementing a trunking service, applied to a long term evolution system, comprising: an evolved node B receiving a call request message sent by a calling terminal in a trunking common control channel, TCCCH, in an uplink direction, wherein, the TCCCH is used for bearing an uplink message of a trunking terminal; the evolved node B, after receiving the call request message, judging whether the call request message is a trunking call request message according to reserved bits in a media access control, MAC, header of a data packet encapsulating the call request message; and if yes, then triggering the call to a scheduling platform, PDS,; the evolved node B, after receiving a trunking call request message, issuing a trunking paging message to a listening terminal in a trunking group of a calling terminal on a trunking paging control channel, TPCCH, in a downlink direction, wherein, the TPCCH is used for bearing the trunking paging message; wherein, a reserved bit in a media access control, MAC, header of a data packet encapsulated by a message born by the TPCCH indicates that the message is a trunking service message; the evolved node B paging a listening terminal, and establishing a trunking group traffic channel, TGTCH, and a trunking group control channel TGCCH in a downlink direction in a cell to which the paged listening terminal belongs, wherein, the TGTCH is used for bearing downlink service data of the trunking service, and the TGCCH is used for bearing a downlink control message of the trunking service; wherein, a reserved bit in a media access control, MAC, header of a data packet encapsulated by a message born by the TGTCH and the TGCCH indicates that the message is a trunking service message. an evolved node B receiving a call request message sent by a calling terminal in a trunking common control channel, TCCCH, in an uplink direction, wherein, the TCCCH is used for bearing an uplink message of a trunking terminal; the evolved node B, after receiving the call request message, judging whether the call request message is a trunking call request message according to reserved bits in a media access control, MAC, header of a data packet encapsulating the call request message; and if yes, then triggering the call to a scheduling platform, PDS,; the evolved node B, after receiving a trunking call request message, issuing a trunking paging message to a listening terminal in a trunking group of a calling terminal on a trunking paging control channel, TPCCH, in a downlink direction, wherein, the TPCCH is used for bearing the trunking paging message; wherein, a reserved bit in a media access control, MAC, header of a data packet encapsulated by a message born by the TPCCH indicates that the message is a trunking service message; the evolved node B paging a listening terminal, and establishing a trunking group traffic channel, TGTCH, and a trunking group control channel TGCCH in a downlink direction in a cell to which the paged listening terminal belongs, wherein, the TGTCH is used for bearing downlink service data of the trunking service, and the TGCCH is used for bearing a downlink control message of the trunking service; wherein, a reserved bit in a media access control, MAC, header of a data packet encapsulated by a message born by the TGTCH and the TGCCH indicates that the message is a trunking service message.