The present disclosure discloses an enhanced CA PUCCH method and device. In a first step, a UE receives a first high layer signaling, wherein the first high layer signaling indicates a reserved SR resource on a first serving cell. In a second step, the UE receives determines a target serving cell for transmitting SR indication information on a first sub frame, wherein the target serving cell is one of K candidate serving cells. In a third step, the UE transmits the SR indication information on the first sub frame of the target serving cell. Wherein the first serving cell is one of K candidate serving cells, the reserved SR resource is PUCCH resource, K is a positive integer, and the SR indication information indicates a positive SR or a negative SR.