A method for indicating a transmission direction, the method being implemented by a terminal for which a base station configures at least one bandwidth part, the method comprising: determining a detection mode configured for detecting a transmission direction of each of the at least one bandwidth part; detecting transmission direction indication information about a bandwidth part according to the detection mode; and determining a transmission direction of the bandwidth part according to the detected transmission direction indication information, wherein the determining a detection mode configured for detecting a transmission direction of each of the at least one bandwidth part comprises: determining a bandwidth part to be detected as one or more designated bandwidth parts, each of the one or more designated bandwidth parts being one designated from all configured bandwidth parts; determining a pairing relationship corresponding to each of the one or more designated bandwidth parts, wherein the pairing relationship is for representing a relationship between each of the one or more designated bandwidth parts and one or more indicated bandwidth parts, the indicated bandwidth part is the designated bandwidth part or any other bandwidth part that is not designated to be detected, information about the transmission direction of the indicated bandwidth part is carried in the transmission direction indication information about the designated bandwidth part; and determining a detection position corresponding to each of one or more designated bandwidth parts. determining a detection mode configured for detecting a transmission direction of each of the at least one bandwidth part; detecting transmission direction indication information about a bandwidth part according to the detection mode; and determining a transmission direction of the bandwidth part according to the detected transmission direction indication information, wherein the determining a detection mode configured for detecting a transmission direction of each of the at least one bandwidth part comprises: determining a bandwidth part to be detected as one or more designated bandwidth parts, each of the one or more designated bandwidth parts being one designated from all configured bandwidth parts; determining a pairing relationship corresponding to each of the one or more designated bandwidth parts, wherein the pairing relationship is for representing a relationship between each of the one or more designated bandwidth parts and one or more indicated bandwidth parts, the indicated bandwidth part is the designated bandwidth part or any other bandwidth part that is not designated to be detected, information about the transmission direction of the indicated bandwidth part is carried in the transmission direction indication information about the designated bandwidth part; and determining a detection position corresponding to each of one or more designated bandwidth parts. determining a bandwidth part to be detected as one or more designated bandwidth parts, each of the one or more designated bandwidth parts being one designated from all configured bandwidth parts; determining a pairing relationship corresponding to each of the one or more designated bandwidth parts, wherein the pairing relationship is for representing a relationship between each of the one or more designated bandwidth parts and one or more indicated bandwidth parts, the indicated bandwidth part is the designated bandwidth part or any other bandwidth part that is not designated to be detected, information about the transmission direction of the indicated bandwidth part is carried in the transmission direction indication information about the designated bandwidth part; and determining a detection position corresponding to each of one or more designated bandwidth parts. <EOS>