A method of power control, comprising: receiving, by a terminal device, Downlink Control Information, DCI, for scheduling a Physical Uplink Shared Channel, PUSCH, from a network device, the DCI comprising a first Sounding Reference Signal, SRS, Resource Indicator, SRI; determining, by the terminal device according to the DCI, a value of an uplink power control parameter corresponding to the first SRI; and determining, by the terminal device according to the value of the uplink power control parameter corresponding to the first SRI, an actual transmitting power of first uplink data, corresponding to the first SRI, to be carried in the PUSCH, characterized in that determining, by the terminal device according to the DCI, the value of the uplink power control parameter corresponding to the first SRI comprises: determining, by the terminal device, a value of a maximum transmitting power corresponding to the first SRI according to a number of SRIs in the DCI; or determining, by the terminal device, a value of a maximum transmitting power corresponding to the first SRI according to a number of SRS resources indicated by the first SRI in the DCI; and determining, by the terminal device according to the value of the uplink power control parameter, the actual transmitting power of the first uplink data, corresponding to the first SRI, to be carried in the PUSCH comprises: determining, by the terminal device according to the value of the maximum transmitting power corresponding to the first SRI, the actual transmitting power of the first uplink data. receiving, by a terminal device, Downlink Control Information, DCI, for scheduling a Physical Uplink Shared Channel, PUSCH, from a network device, the DCI comprising a first Sounding Reference Signal, SRS, Resource Indicator, SRI; determining, by the terminal device according to the DCI, a value of an uplink power control parameter corresponding to the first SRI; and determining, by the terminal device according to the value of the uplink power control parameter corresponding to the first SRI, an actual transmitting power of first uplink data, corresponding to the first SRI, to be carried in the PUSCH, characterized in that determining, by the terminal device according to the DCI, the value of the uplink power control parameter corresponding to the first SRI comprises: determining, by the terminal device, a value of a maximum transmitting power corresponding to the first SRI according to a number of SRIs in the DCI; or determining, by the terminal device, a value of a maximum transmitting power corresponding to the first SRI according to a number of SRS resources indicated by the first SRI in the DCI; and determining, by the terminal device according to the value of the uplink power control parameter, the actual transmitting power of the first uplink data, corresponding to the first SRI, to be carried in the PUSCH comprises: determining, by the terminal device according to the value of the maximum transmitting power corresponding to the first SRI, the actual transmitting power of the first uplink data. determining, by the terminal device, a value of a maximum transmitting power corresponding to the first SRI according to a number of SRIs in the DCI; or determining, by the terminal device, a value of a maximum transmitting power corresponding to the first SRI according to a number of SRS resources indicated by the first SRI in the DCI; and determining, by the terminal device according to the value of the uplink power control parameter, the actual transmitting power of the first uplink data, corresponding to the first SRI, to be carried in the PUSCH comprises: determining, by the terminal device according to the value of the maximum transmitting power corresponding to the first SRI, the actual transmitting power of the first uplink data.