A power control method for Device to Device Proximity Service, D2D, communication, comprising: receiving, by a user equipment, UE, a power control parameter set sent by a base station, wherein the power control parameter set comprises at least one power control parameter group and a first mapping relationship between said at least one power control parameter group and a communication service, wherein said at least one power control parameter group comprises at least one power control parameter; determining, by the UE, a first power control parameter group according to the power control parameter set, and according to a communication service initiated by the UE, and the first mapping relationship; wherein the determining, by the UE, the first power control parameter group according to the power control parameter set, and according to the communication service initiated by the UE, and the first mapping relationship includes: selecting a second power control parameter group from the power control parameter set as the first power control parameter group, or selecting a third power control parameter group from the power control parameter set as the first power control parameter group; and determining, by the UE, a transmit power of the UE according to the at least one power control parameter in the first power control parameter group; wherein the power control parameter set comprises three second power control parameter groups and one third power control parameter group, wherein each second power control parameter group comprises at least one first power control parameter, and the third power control parameter group comprises a second power control parameter, wherein the second power control parameter is used to instruct the UE to transmit at a maximum transmit power allowed by the UE or used to instruct the UE to transmit at a power corresponding to the second power control parameter; characterized in that a first one of the three second power control parameter groups corresponds to a short-range D2D communication service; a second one of the three second power control parameter groups corresponds to a middle-range D2D communication service; a third one of the three second power control parameter groups corresponds to a long-range the third power control parameter group corresponds to an emergency communication service. receiving, by a user equipment, UE, a power control parameter set sent by a base station, wherein the power control parameter set comprises at least one power control parameter group and a first mapping relationship between said at least one power control parameter group and a communication service, wherein said at least one power control parameter group comprises at least one power control parameter; determining, by the UE, a first power control parameter group according to the power control parameter set, and according to a communication service initiated by the UE, and the first mapping relationship; wherein the determining, by the UE, the first power control parameter group according to the power control parameter set, and according to the communication service initiated by the UE, and the first mapping relationship includes: selecting a second power control parameter group from the power control parameter set as the first power control parameter group, or selecting a third power control parameter group from the power control parameter set as the first power control parameter group; and determining, by the UE, a transmit power of the UE according to the at least one power control parameter in the first power control parameter group; wherein the power control parameter set comprises three second power control parameter groups and one third power control parameter group, wherein each second power control parameter group comprises at least one first power control parameter, and the third power control parameter group comprises a second power control parameter, wherein the second power control parameter is used to instruct the UE to transmit at a maximum transmit power allowed by the UE or used to instruct the UE to transmit at a power corresponding to the second power control parameter; characterized in that a first one of the three second power control parameter groups corresponds to a short-range D2D communication service; a second one of the three second power control parameter groups corresponds to a middle-range D2D communication service; a third one of the three second power control parameter groups corresponds to a long-range the third power control parameter group corresponds to an emergency communication service.