Congestion control method and device

The invention discloses a congestion control method and a congestion control device for avoiding repeated oscillation between TNL congestion and congestion removal. The congestion control method provided by the invention comprises that: a base station reduces data transmission resources distributed to user equipment (UE) according to the transmission network layer (TNL) congestion indication sentby a radio network controller (RNC); and when the TNL congestion removal of the UE is determined, the base station increases the data transmission resources distributed to the UE by multiple times till the data transmission resources distributed to the UE reach a preset threshold value.