The invention discloses a method for controlling the power of the HSDPA system, which aims at the HS-SICH and includes the steps of: real-time monitoring the corresponding relationship between the HS-SCCH as well as the HS-SICH and UE, and obtaining a time parameter of the corresponding relationship between the channel and the UE; a first stage, which is the stage from the first HS-SCCH subframe transmitted from the base station to the generation of the power control instruction by utilizing the first HS-SICH subframe fed back by the UE, wherein, the power control instruction can be set to be up or down randomly or alternately; a second stage, which is the stage from the generation of the power control instruction by utilizing the first HS-SICH subframe fed back by the UE to the last HS-SCCH subframe transmitted for the UE, wherein, the power control instruction can be set by utilizing the power control parameters obtained from the calculation of the HS-SICH subframe; the base station transmits the HS-SCCH subframe carrying the power control instruction to the UE. The invention also discloses a power control method aiming at the HS-SCCH, a base station and a down beam shaping proposal.