The present application discloses a method, a base station, and a user equipment for determining channel loss, where the method includes: receiving first information that is from a first user equipment (UE) and corresponds to a rank of a channel loss extent of the first UE; and determining the rank of the channel loss extent of the first UE according to the first information. In the present application, a base station can learn a rank of a channel loss extent of a first UE, so as to perform data transmission according to the rank, thereby improving the quality of communications between the base station and the first UE.