Embodiments of the present invention provide an information transmission method and an apparatus, including: receiving, by a base station, first indication information sent by first user equipment UE, where the first indication information is used to indicate baseband processing bandwidth of the first UE, and the baseband processing bandwidth of the first UE is less than or equal to preset bandwidth; determining, by the base station, the baseband processing bandwidth of the first UE according to the first indication information; and sending, by the base station, first information to the first UE according to the baseband processing bandwidth of the first UE, where the first information is sent by the base station to the first UE through a physical downlink shared channel PDSCH, and bandwidth occupied by a physical resource of the first information is less than or equal to the baseband processing bandwidth of the first UE.