A method for implementing trunking speaking right seizing of a Long Term Evolution, LTE, based broadband trunking system, wherein, the LTE-based broadband trunking system comprises a first trunking terminal and a second trunking terminal located in a same group, a broadband wireless access subsystem, a network subsystem and a trunking scheduling management center, the first trunking terminal is in a first eNodeB of the broadband wireless access subsystem and the second trunking terminal is in a second eNodeB of the broadband wireless access subsystem, comprising: when the second trunking terminal occupying trunking speaking right, the first eNodeB receiving a request of trunking speaking right seizing from the first trunking terminal, forwarding the request of trunking speaking right seizing to a Mobile Management Entity, MME, of the network subsystem; the first eNodeB interacting with the MME, a Service Gateway, SGW, and a Packet Data Network Gateway, P-GW, located in the network subsystem in which the MME is located to complete an establishment of a dedicated bearer for trunking speaking right seizing of the first terminal; the first eNodeB receiving an accept message of the request of trunking speaking right seizing of the first trunking terminal returned by the MME, and sending the accept message of the request of trunking speaking right seizing to the first trunking terminal, wherein the accept message of the request of trunking speaking right seizing is returned by the MME after the MME interacting with a Multimedia Broadcast Multicast Service-Gateway, MBMS-GW, the SGW and a trunking scheduling management center of the LTE-based broadband trunking system, and completing trunking speaking right update; the second eNodeB interacting with the MME and the second terminal to complete a trunking speaking right context modification; and the first eNodeB and the second eNodeB receiving a speaking right occupation prompt message sent by the MME, and sending the trunking speaking right occupation prompt message to all trunking terminals within a trunking area of the LTE-based broadband trunking system via a multicast control channel of an enhanced Multimedia Broadcast Multicast Service, eMBMS, and updating configuration information. when the second trunking terminal occupying trunking speaking right, the first eNodeB receiving a request of trunking speaking right seizing from the first trunking terminal, forwarding the request of trunking speaking right seizing to a Mobile Management Entity, MME, of the network subsystem; the first eNodeB interacting with the MME, a Service Gateway, SGW, and a Packet Data Network Gateway, P-GW, located in the network subsystem in which the MME is located to complete an establishment of a dedicated bearer for trunking speaking right seizing of the first terminal; the first eNodeB receiving an accept message of the request of trunking speaking right seizing of the first trunking terminal returned by the MME, and sending the accept message of the request of trunking speaking right seizing to the first trunking terminal, wherein the accept message of the request of trunking speaking right seizing is returned by the MME after the MME interacting with a Multimedia Broadcast Multicast Service-Gateway, MBMS-GW, the SGW and a trunking scheduling management center of the LTE-based broadband trunking system, and completing trunking speaking right update; the second eNodeB interacting with the MME and the second terminal to complete a trunking speaking right context modification; and the first eNodeB and the second eNodeB receiving a speaking right occupation prompt message sent by the MME, and sending the trunking speaking right occupation prompt message to all trunking terminals within a trunking area of the LTE-based broadband trunking system via a multicast control channel of an enhanced Multimedia Broadcast Multicast Service, eMBMS, and updating configuration information.