An uplink transmission method, comprising: determining, by a terminal device, UE, according to an expected sending power of each uplink among a plurality of uplinks, an actual sending power of the each uplink; and sending, by the terminal device, signal on the each uplink using the actual sending power of the each uplink, wherein carrier waves corresponding to the plurality of uplinks at least partially overlap in a frequency domain, the plurality of uplinks comprise a first uplink, a priority of the first uplink is higher than priorities of other uplinks, and the determining, by a terminal device according to an expected sending power of each uplink among a plurality of uplinks, an actual sending power of the each uplink comprises: determining a maximum sending power of the UE as the actual sending power corresponding to the first uplink when the expected sending power of the first uplink is greater than the maximum sending power of the UE, wherein the maximum sending power of the UE is indicative of a maximum sending power available for the terminal device to simultaneously send signal on the plurality of uplinks, and wherein the priority of the each uplink is determined by the terminal device according to waveforms used by the uplinks, an uplink using a waveform formed by orthogonal frequency division multiplexing, OFDM, technology corresponds to a lower priority, and an uplink using a waveform formed by discrete Fourier transform spread OFDM, DFT-s-OFDM, technology corresponds to a higher priority. determining, by a terminal device, UE, according to an expected sending power of each uplink among a plurality of uplinks, an actual sending power of the each uplink; and sending, by the terminal device, signal on the each uplink using the actual sending power of the each uplink, wherein carrier waves corresponding to the plurality of uplinks at least partially overlap in a frequency domain, the plurality of uplinks comprise a first uplink, a priority of the first uplink is higher than priorities of other uplinks, and the determining, by a terminal device according to an expected sending power of each uplink among a plurality of uplinks, an actual sending power of the each uplink comprises: determining a maximum sending power of the UE as the actual sending power corresponding to the first uplink when the expected sending power of the first uplink is greater than the maximum sending power of the UE, wherein the maximum sending power of the UE is indicative of a maximum sending power available for the terminal device to simultaneously send signal on the plurality of uplinks, and wherein the priority of the each uplink is determined by the terminal device according to waveforms used by the uplinks, an uplink using a waveform formed by orthogonal frequency division multiplexing, OFDM, technology corresponds to a lower priority, and an uplink using a waveform formed by discrete Fourier transform spread OFDM, DFT-s-OFDM, technology corresponds to a higher priority. determining a maximum sending power of the UE as the actual sending power corresponding to the first uplink when the expected sending power of the first uplink is greater than the maximum sending power of the UE, wherein the maximum sending power of the UE is indicative of a maximum sending power available for the terminal device to simultaneously send signal on the plurality of uplinks, and wherein the priority of the each uplink is determined by the terminal device according to waveforms used by the uplinks, an uplink using a waveform formed by orthogonal frequency division multiplexing, OFDM, technology corresponds to a lower priority, and an uplink using a waveform formed by discrete Fourier transform spread OFDM, DFT-s-OFDM, technology corresponds to a higher priority.