A secondary cell on the random access apparatus and method

Embodiment of the present invention discloses a method and apparatus on a co random access cell, belonging to the field of communications technologies. The method comprising: transmitting a preamble to a base station via SCell random access preamble; SCell the common search space CSS listening; acquired in the random access by the CSS CSS response message listens after the scheduling information, the scheduling information message acquiring the random access response message from the base station according to the random access response; after receiving the random access response message, the successful transmission or to the base station after the first scheduled uplink transmission message, or after receiving the contention resolution message, to stop listening to the CSS. The technical scheme can reduce the number of blind detection UE, the UE to save power.