A power configuration method, comprising: when user equipment, UE, sends information to a first network side device over a first channel, and the UE sends information 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 a first overlap portion exists between a first portion of a first subframe in which the first channel is located and a second subframe in which the second channel is located, and a second overlap portion exists between a second portion, other than the first portion, of the first subframe and a third subframe in which the third channel is located, wherein the third subframe is a next subframe of the second subframe, and the third subframe is used to send information to the second network side device; and allocating, according to a priority of the first channel and a priority of the second channel, a first transmit power to the first subframe, and second transmit power to the second subframe, wherein the first transmit power is less than or equal to a power upper limit, and a sum of the first transmit power and the second transmit power is less than or equal to a maximum total transmit power of the UE, wherein the priority of the first channel is higher than the priority of the second channel; and wherein the allocating of the first transmit power and the second transmit power comprises: determining whether a required power of the first subframe is greater than the power upper limit; when the required power of the first subframe is greater than the power upper limit, determining the first transmit power to be less than or equal to the power upper limit; or when the required power of the first subframe is less than or equal to the power upper limit, determining the first transmit power to be equal to the required power. when user equipment, UE, sends information to a first network side device over a first channel, and the UE sends information 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 a first overlap portion exists between a first portion of a first subframe in which the first channel is located and a second subframe in which the second channel is located, and a second overlap portion exists between a second portion, other than the first portion, of the first subframe and a third subframe in which the third channel is located, wherein the third subframe is a next subframe of the second subframe, and the third subframe is used to send information to the second network side device; and allocating, according to a priority of the first channel and a priority of the second channel, a first transmit power to the first subframe, and second transmit power to the second subframe, wherein the first transmit power is less than or equal to a power upper limit, and a sum of the first transmit power and the second transmit power is less than or equal to a maximum total transmit power of the UE, wherein the priority of the first channel is higher than the priority of the second channel; and wherein the allocating of the first transmit power and the second transmit power comprises: determining whether a required power of the first subframe is greater than the power upper limit; when the required power of the first subframe is greater than the power upper limit, determining the first transmit power to be less than or equal to the power upper limit; or when the required power of the first subframe is less than or equal to the power upper limit, determining the first transmit power to be equal to the required power. determining whether a required power of the first subframe is greater than the power upper limit; when the required power of the first subframe is greater than the power upper limit, determining the first transmit power to be less than or equal to the power upper limit; or when the required power of the first subframe is less than or equal to the power upper limit, determining the first transmit power to be equal to the required power.