A method for a terminal to transmit an uplink signal, comprising: receiving an instruction sent by a serving base station and used for determining transmit power, wherein the instruction is determined by the serving base station according to a receiving manner in which a base station side receives an uplink signal, wherein the receiving manner is one of an independent reception by the serving base station and a joint reception by the serving base station and at least one other base station; selecting an uplink power control formula from a plurality of uplink power control formulas according to the instruction; obtaining transmit power of an uplink signal by using the selected uplink power control formula, wherein when the receiving manner is the joint reception by the serving base station and another base station, obtaining transmit power of a current uplink signal by using the selected uplink power control formula further comprises receiving respective target receive power transmitted by the base stations jointly receiving the uplink signal; and obtaining, by using the selected uplink power control formula and the target receive power transmitted by the base stations, transmit power of the uplink signal suitable for joint reception; or obtaining transmit power of a current uplink signal by using the selected uplink power control formula further comprises receiving a target power value that is sent by the serving base station and suitable for joint reception, wherein the target power value is obtained by negotiation by the base stations jointly receiving the uplink signal; and obtaining, by using the selected uplink power control formula and the received target power value, transmit power suitable for joint reception; and transmitting an uplink signal by using the transmit power. receiving an instruction sent by a serving base station and used for determining transmit power, wherein the instruction is determined by the serving base station according to a receiving manner in which a base station side receives an uplink signal, wherein the receiving manner is one of an independent reception by the serving base station and a joint reception by the serving base station and at least one other base station; selecting an uplink power control formula from a plurality of uplink power control formulas according to the instruction; obtaining transmit power of an uplink signal by using the selected uplink power control formula, wherein when the receiving manner is the joint reception by the serving base station and another base station, obtaining transmit power of a current uplink signal by using the selected uplink power control formula further comprises receiving respective target receive power transmitted by the base stations jointly receiving the uplink signal; and obtaining, by using the selected uplink power control formula and the target receive power transmitted by the base stations, transmit power of the uplink signal suitable for joint reception; or obtaining transmit power of a current uplink signal by using the selected uplink power control formula further comprises receiving a target power value that is sent by the serving base station and suitable for joint reception, wherein the target power value is obtained by negotiation by the base stations jointly receiving the uplink signal; and obtaining, by using the selected uplink power control formula and the received target power value, transmit power suitable for joint reception; and transmitting an uplink signal by using the transmit power.