A method for determining a Physical Uplink Control Channel, PUCCH, power control offset, comprising determining a quantity O UCI of bits of first Uplink Control Information, UCI, required to be transmitted on a PUCCH, and determining a quantity N RE of Resource Elements, REs, bearing the first UCI in the PUCCH; and determining the offset Δ PUCCH_TF,c (i) for PUCCH power control calculation according to a formula Δ PUCCH_TF,c ( i)= 10log 10 (2 g ( O UCI / N RE))-1), wherein g(O UCI / N RE) is a linear fitting function with O UCI and N RE being variables, and g(O UCI / N RE) is a ∗ (O UCI /N RE) + b, wherein a and b are tuning coefficients, 1.5≤a≤2.5, and -1≤b≤1; wherein the determining the quantity N RE of REs bearing the UCI in the PUCCH, comprises: determining N RE as 2 3 * N symb PUCCH * M SC PUCCH when a PUCCH format 2 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 2, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 2; and/or, determining N RE as N symb PUCCH − N DMRS − symb PUCCH * M SC PUCCH when a PUCCH format 3/4 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 3/4, N DMRS − symb PUCCH is a quantity of PUCCH symbols occupied by a Demodulation Reference Signal, DMRS, defined in the PUCCH format 3/4, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 3/4. determining a quantity O UCI of bits of first Uplink Control Information, UCI, required to be transmitted on a PUCCH, and determining a quantity N RE of Resource Elements, REs, bearing the first UCI in the PUCCH; and determining the offset Δ PUCCH_TF,c (i) for PUCCH power control calculation according to a formula Δ PUCCH_TF,c ( i)= 10log 10 (2 g ( O UCI / N RE))-1), wherein g(O UCI / N RE) is a linear fitting function with O UCI and N RE being variables, and g(O UCI / N RE) is a ∗ (O UCI /N RE) + b, wherein a and b are tuning coefficients, 1.5≤a≤2.5, and -1≤b≤1; wherein the determining the quantity N RE of REs bearing the UCI in the PUCCH, comprises: determining N RE as 2 3 * N symb PUCCH * M SC PUCCH when a PUCCH format 2 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 2, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 2; and/or, determining N RE as N symb PUCCH − N DMRS − symb PUCCH * M SC PUCCH when a PUCCH format 3/4 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 3/4, N DMRS − symb PUCCH is a quantity of PUCCH symbols occupied by a Demodulation Reference Signal, DMRS, defined in the PUCCH format 3/4, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 3/4. determining N RE as 2 3 * N symb PUCCH * M SC PUCCH when a PUCCH format 2 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 2, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 2; and/or, determining N RE as N symb PUCCH − N DMRS − symb PUCCH * M SC PUCCH when a PUCCH format 3/4 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 3/4, N DMRS − symb PUCCH is a quantity of PUCCH symbols occupied by a Demodulation Reference Signal, DMRS, defined in the PUCCH format 3/4, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 3/4.