The present disclosure provides a method and a device in wireless transmission. A User Equipment (UE) transmits Q piece(s) of indication information, and then transmits a first reference signal and a first radio signal on a first carrier, wherein the first radio signal includes L radio sub-signals, and the L radio sub-signals occupy L time intervals respectively. The Q piece(s) of indication information is(are) used for determining ratios of transmit powers of the first radio signal to transmit powers of the first reference signal in Q time interval(s) respectively. The Q time interval(s) is(are) one(Q ones) of the L time intervals. The present disclosure can implement dynamic regulation of transmit powers of the first radio signal in the Q time interval(s), thereby optimizing the transmit power of the first radio signal on the premise of ensuring physical channels carrying control information acquire sufficient transmit powers in carrier aggregation scenarios.