An uplink power control method, wherein the method comprises: determining, by a network device, an uplink power adjustment parameter value of a terminal device, wherein the uplink power adjustment parameter value is related to cross-link interference received by the network device; sending, by the network device, information about the uplink power adjustment parameter value to the terminal device, and the method being characterized in that: the uplink power adjustment parameter value is corresponding to P 1, and P 1 makes the following true: a signal-to-interference ratio SIR of the network device determined when a cross-link interference power value is 0 is equal to an SIR of the network device determined when the cross-link interference power value is not 0; or the uplink power adjustment parameter value is corresponding to P 1, and P 1 makes the following true: a signal to interference plus noise ratio SINR of the network device determined when a cross-link interference power value is 0 is equal to an SINR of the network device determined when the cross-link interference power value is not 0, wherein P 1 represents a variation amount of a receive power value of the network device, and the variation amount is corresponding to the uplink power adjustment parameter value. determining, by a network device, an uplink power adjustment parameter value of a terminal device, wherein the uplink power adjustment parameter value is related to cross-link interference received by the network device; sending, by the network device, information about the uplink power adjustment parameter value to the terminal device, and the method being characterized in that: the uplink power adjustment parameter value is corresponding to P 1, and P 1 makes the following true: a signal-to-interference ratio SIR of the network device determined when a cross-link interference power value is 0 is equal to an SIR of the network device determined when the cross-link interference power value is not 0; or the uplink power adjustment parameter value is corresponding to P 1, and P 1 makes the following true: a signal to interference plus noise ratio SINR of the network device determined when a cross-link interference power value is 0 is equal to an SINR of the network device determined when the cross-link interference power value is not 0, wherein P 1 represents a variation amount of a receive power value of the network device, and the variation amount is corresponding to the uplink power adjustment parameter value. the uplink power adjustment parameter value is corresponding to P 1, and P 1 makes the following true: a signal-to-interference ratio SIR of the network device determined when a cross-link interference power value is 0 is equal to an SIR of the network device determined when the cross-link interference power value is not 0; or the uplink power adjustment parameter value is corresponding to P 1, and P 1 makes the following true: a signal to interference plus noise ratio SINR of the network device determined when a cross-link interference power value is 0 is equal to an SINR of the network device determined when the cross-link interference power value is not 0, wherein P 1 represents a variation amount of a receive power value of the network device, and the variation amount is corresponding to the uplink power adjustment parameter value.