A method for information transmission performed by a base station, comprising: acquiring indication information for a target terminal; and sending the indication information to the target terminal, wherein the indication information comprises: an interference presence identification; a modulation order of an interference signal; and a Demodulation Reference Signal, DMRS, port number used by an interference terminal; wherein the indication information is used for enabling the target terminal to cancel interference based on the indication information during data reception of multi-user superposition transmission; characterized in that the interference presence identification and the modulation order of the interference signal are indicated by joint coding; or the interference presence identification and the DMRS port number used by the interference terminal are indicated by joint coding; an overhead of the indication information is 4 bits, in a case that the interference presence identification and the DMRS port number used by the interference terminal are indicated by joint coding, the 4 bits include 2 bits for the modulation order of the interference signal and 2 bits for joint coding of the interference presence identification and the DMRS port number used by the interference terminal; and in a case that the interference presence identification and the modulation order of the interference signal are indicated by joint coding, the 4 bits include 2 bits for joint coding of the interference presence identification and the modulation order of the interference signal and 2 bits for the DMRS port number used by the interference terminal. acquiring indication information for a target terminal; and sending the indication information to the target terminal, wherein the indication information comprises: an interference presence identification; a modulation order of an interference signal; and a Demodulation Reference Signal, DMRS, port number used by an interference terminal; an interference presence identification; a modulation order of an interference signal; and a Demodulation Reference Signal, DMRS, port number used by an interference terminal; wherein the indication information is used for enabling the target terminal to cancel interference based on the indication information during data reception of multi-user superposition transmission; characterized in that the interference presence identification and the modulation order of the interference signal are indicated by joint coding; or the interference presence identification and the DMRS port number used by the interference terminal are indicated by joint coding; an overhead of the indication information is 4 bits, in a case that the interference presence identification and the DMRS port number used by the interference terminal are indicated by joint coding, the 4 bits include 2 bits for the modulation order of the interference signal and 2 bits for joint coding of the interference presence identification and the DMRS port number used by the interference terminal; and in a case that the interference presence identification and the modulation order of the interference signal are indicated by joint coding, the 4 bits include 2 bits for joint coding of the interference presence identification and the modulation order of the interference signal and 2 bits for the DMRS port number used by the interference terminal.