The invention discloses an uplink grant processing method and an associated device. The method comprises the following steps: a terminal searches a preset mapping relation set at the mth subframe or the sth subframe, and obtains x main cell group (MCG) uplink grant (UL Grant) issued at the (m-2)th subframe by a main evolution-type base station MeNB corresponding to the subframe number m+2, y supplementary cell group SCG UL Grant issued at the (s-2)th subframe by a supplementary evolution-type base station SeNB corresponding to the subframe number s+2, p MCG UL Grant corresponding to the subframe number m+3, and q SCG UL Grant corresponding to the subframe number s+3; and carrying out scheduling processing on all of the obtained UL Grant at the mth subframe according to the relationship among x, y, p, q and k. The method can improve uplink radio resource utilization rate, improves uplink throughput and reduces time delay.