Uplink power control method of multiple-antenna system, and user terminal

The invention discloses a power control method of a multiple-antenna system, and a user terminal, which can realize obtaining of Delta TF (Delta Transmission Format) parameters under an uplink dicode word flow of UE (user equipment). Through the Delta TF parameters, eNB (evolved Node B) can control the uplink PSD (Power Spectral Density) of the UE only by controlling the MCS (Modulation and Coding Scheme) of an uplink code word flow of the UE. The method provided by the invention has the advantage that the eNB can control the PSD of the UE more flexibly and effectively, so that the purposes of lowering system interference, ensuring transmission power of the UE and increasing system throughput can be achieved.