A carrier indication method, the method used to indicate a carrier that is to be used by a user equipment having a duplex capability, the method comprising: receiving, by the user equipment, first information sent by a full-duplex base station; if the user equipment is capable of transmitting uplink data and downlink data on the carrier using the same carrier for downlink and uplink transmission, determining, by the user equipment according to the first information, a carrier used for transmitting first-type information; and transmitting, by the user equipment, the first-type information on the determined carrier, wherein the first-type information comprises at least one of the following: uplink data, downlink data, and scheduling information; wherein the determining, by the user equipment according to the first information, a carrier used for transmitting first-type information comprises: determining, by the user equipment according to a correspondence between the first information and the carrier used for transmitting the first-type information, the carrier used for transmitting the first-type information, wherein the determining, by the user equipment according to a correspondence between the first information and the carrier used for transmitting the first-type information, the carrier used for transmitting the first-type information comprises: determining, by the user equipment, whether the first information belongs to a first predetermined set or a second predetermined set; and if the first information belongs to the first predetermined set, determining, by the user equipment, to transmit the first-type information on a first carrier; or if the first information belongs to the second predetermined set, determining, by the user equipment, to transmit the first-type information on a second carrier. receiving, by the user equipment, first information sent by a full-duplex base station; if the user equipment is capable of transmitting uplink data and downlink data on the carrier using the same carrier for downlink and uplink transmission, determining, by the user equipment according to the first information, a carrier used for transmitting first-type information; and transmitting, by the user equipment, the first-type information on the determined carrier, wherein the first-type information comprises at least one of the following: uplink data, downlink data, and scheduling information; wherein the determining, by the user equipment according to the first information, a carrier used for transmitting first-type information comprises: determining, by the user equipment according to a correspondence between the first information and the carrier used for transmitting the first-type information, the carrier used for transmitting the first-type information, wherein the determining, by the user equipment according to a correspondence between the first information and the carrier used for transmitting the first-type information, the carrier used for transmitting the first-type information comprises: determining, by the user equipment, whether the first information belongs to a first predetermined set or a second predetermined set; and if the first information belongs to the first predetermined set, determining, by the user equipment, to transmit the first-type information on a first carrier; or if the first information belongs to the second predetermined set, determining, by the user equipment, to transmit the first-type information on a second carrier. determining, by the user equipment, whether the first information belongs to a first predetermined set or a second predetermined set; and if the first information belongs to the first predetermined set, determining, by the user equipment, to transmit the first-type information on a first carrier; or if the first information belongs to the second predetermined set, determining, by the user equipment, to transmit the first-type information on a second carrier.