A power configuration method, comprising: when user equipment UE sends data to a first network side device over a first channel and the UE sends data to a second network side device over a second channel, determining that the first channel overlaps both of the second channel and a third channel, wherein an overlap portion exists between a first portion of a first subframe j in which the first channel is located and a second subframe i in which the second channel is located; and an overlap portion exists between a second portion, other than the first portion, of the first subframe j and a first portion of a third subframe i+1 in which the third channel is located, wherein the third subframe i+1 is a next subframe of the second subframe i, and the third subframe i+1 is used to send data to the second network side device; and allocating, according to a priority of the first channel and a priority of the second channel, first transmit power to the first portion of the first subframe j and the second portion of the first subframe j, and second transmit power to the second subframe i, wherein the first transmit power is less than or equal to a first power upper limit, a sum of the first transmit power and the second transmit power is less than or equal to a preset first threshold, the first threshold being a maximum total transmit power of the UE in the first portion of the first subframe j, and a sum of third transmit power of the third subframe i+1 and the first power upper limit is less than or equal to a preset second threshold, the second threshold being a maximum total transmit power of the UE in the second portion of the first subframe j. when user equipment UE sends data to a first network side device over a first channel and the UE sends data to a second network side device over a second channel, determining that the first channel overlaps both of the second channel and a third channel, wherein an overlap portion exists between a first portion of a first subframe j in which the first channel is located and a second subframe i in which the second channel is located; and an overlap portion exists between a second portion, other than the first portion, of the first subframe j and a first portion of a third subframe i+1 in which the third channel is located, wherein the third subframe i+1 is a next subframe of the second subframe i, and the third subframe i+1 is used to send data to the second network side device; and allocating, according to a priority of the first channel and a priority of the second channel, first transmit power to the first portion of the first subframe j and the second portion of the first subframe j, and second transmit power to the second subframe i, wherein the first transmit power is less than or equal to a first power upper limit, a sum of the first transmit power and the second transmit power is less than or equal to a preset first threshold, the first threshold being a maximum total transmit power of the UE in the first portion of the first subframe j, and a sum of third transmit power of the third subframe i+1 and the first power upper limit is less than or equal to a preset second threshold, the second threshold being a maximum total transmit power of the UE in the second portion of the first subframe j.