The present invention discloses an uplink power control method, a power control parameter allocation method, and a device thereof. The uplink power control method includes: a step in which a user equipment receives data in M downlink subframes of N downlink carriers and generates uplink control information; and uplink control information of the M downlink subframes Is transmitted in the same uplink subframe; Wherein the user device is based on whether the number of bits is greater than the set threshold value of the uplink control information, and confirm the uplink control information Δ F_PUCCH (F) and h for calculating the PUCCH transmission power (n), of which , The Δ F_PUCCH (F) is for indicating a power offset amount of a PUCCH of a different format relative to the PUCCH format 1a, and h (n) is for indicating a power offset amount corresponding to the number of PUCCH transmission bits; Calculating the transmission power of the PUCCH based on the determined ΔF_PUCCH (F) and h (n) , and transmitting the generated uplink control information in the PUCCH using the calculated transmission power . The present invention improves the accuracy of power control and further improves transmission performance of uplink control information.