A floor control method, characterized by comprising: receiving, by a mission-critical push-to-talk, MCPTT server over Long Term Evolution network, a first message that is sent by user equipment, UE, wherein the first message comprises an identifier of a group to which a talker corresponding to the UE belongs and a parameter indicating that an event type is a floor request; generating, by the MCPTT server, a second message according to a floor control policy and the first message, wherein the second message comprises the identifier of the group to which the talker corresponding to the UE belongs and a parameter indicating that an event type is a floor granted, and the second message is used to instruct the UE to notify the talker to whom the UE belongs that a floor is granted; sending, by the MCPTT server, the second message to the UE; receiving, by the MCPTT server, a response message that is of the second message and that is sent by the UE; generating, by the MCPTT server, a first instruction message according to the response message of the second message, wherein the first instruction message is used to instruct a media resource function entity to perform uplink voice switching on a media plane; and sending, by the MCPTT server, the first instruction message to the media resource function entity, characterized in that: a control plane and a media plane of a PTT service are separated, and transmission information on the control plane for the floor control method comprises any of: floor application, floor deny, floor release, remaining floor duration notification, and floor information notification by using a multicast channel, wherein the method further comprises: sending, by the MCPTT server, a first notification message to a broadcast/multicast service center, BM-SC, wherein the first notification message comprises a temporary mobile group identity, TMGI and an identity of the talker, and the first notification message is used to instruct the BM-SC to notify, by using a multicast channel, a device used by another member, except the talker, that is in a multicast area and that is in the group to which the talker belongs of information indicating that a floor of the talker is granted. receiving, by a mission-critical push-to-talk, MCPTT server over Long Term Evolution network, a first message that is sent by user equipment, UE, wherein the first message comprises an identifier of a group to which a talker corresponding to the UE belongs and a parameter indicating that an event type is a floor request; generating, by the MCPTT server, a second message according to a floor control policy and the first message, wherein the second message comprises the identifier of the group to which the talker corresponding to the UE belongs and a parameter indicating that an event type is a floor granted, and the second message is used to instruct the UE to notify the talker to whom the UE belongs that a floor is granted; sending, by the MCPTT server, the second message to the UE; receiving, by the MCPTT server, a response message that is of the second message and that is sent by the UE; generating, by the MCPTT server, a first instruction message according to the response message of the second message, wherein the first instruction message is used to instruct a media resource function entity to perform uplink voice switching on a media plane; and sending, by the MCPTT server, the first instruction message to the media resource function entity, characterized in that: a control plane and a media plane of a PTT service are separated, and transmission information on the control plane for the floor control method comprises any of: floor application, floor deny, floor release, remaining floor duration notification, and floor information notification by using a multicast channel, wherein the method further comprises: sending, by the MCPTT server, a first notification message to a broadcast/multicast service center, BM-SC, wherein the first notification message comprises a temporary mobile group identity, TMGI and an identity of the talker, and the first notification message is used to instruct the BM-SC to notify, by using a multicast channel, a device used by another member, except the talker, that is in a multicast area and that is in the group to which the talker belongs of information indicating that a floor of the talker is granted. a control plane and a media plane of a PTT service are separated, and transmission information on the control plane for the floor control method comprises any of: floor application, floor deny, floor release, remaining floor duration notification, and floor information notification by using a multicast channel, wherein the method further comprises: sending, by the MCPTT server, a first notification message to a broadcast/multicast service center, BM-SC, wherein the first notification message comprises a temporary mobile group identity, TMGI and an identity of the talker, and the first notification message is used to instruct the BM-SC to notify, by using a multicast channel, a device used by another member, except the talker, that is in a multicast area and that is in the group to which the talker belongs of information indicating that a floor of the talker is granted.