A method for indicating multi-port frequency domain resource location allocation information, which is implemented by a base station or a terminal in a Long Term Evolution system and comprises: determining, according to a system bandwidth, the number of total bits of multi-port frequency domain resource location allocation information used for uplink data transmission under multiple ports; determining the number of bits of uplink frequency domain resource location allocation information according to the system bandwidth; and placing the bits of the uplink frequency domain resource location allocation information in alignment with a Least Bit Status, LBS, bit of the total bits of the multi-port frequency domain resource location allocation information or with a Most Bit Status, MBS, bit of the total bits of the multi-port frequency domain resource location allocation information; wherein determining the number of the total bits of the multi-port frequency domain resource location allocation information according to the system bandwidth comprises: when the system bandwidth N RB UL acquired is within a set {11RB, 12RB, 16RB, 27RB, 32RB, 33RB}, the number of the total bits of the multi-port frequency domain resource location allocation information is: ⌈ log 2 ⌈ N RB UL / P + 2 ⌉ 4 ⌉ or ⌈ log 2 ⌈ N RB UL / P ⌉ + 2 4 ⌉; and when the system bandwidth N RB UL acquired is not within the set {11RB, 12RB, 16RB, 27RB, 32RB, 33RB}, the number of the total bits of the multi-port frequency domain resource location allocation information is: ⌈ log 2 ⌈ N RB UL / P + 1 ⌉ 4 ⌉ where P is a size of a resource block group, RBG. determining, according to a system bandwidth, the number of total bits of multi-port frequency domain resource location allocation information used for uplink data transmission under multiple ports; determining the number of bits of uplink frequency domain resource location allocation information according to the system bandwidth; and placing the bits of the uplink frequency domain resource location allocation information in alignment with a Least Bit Status, LBS, bit of the total bits of the multi-port frequency domain resource location allocation information or with a Most Bit Status, MBS, bit of the total bits of the multi-port frequency domain resource location allocation information; wherein determining the number of the total bits of the multi-port frequency domain resource location allocation information according to the system bandwidth comprises: when the system bandwidth N RB UL acquired is within a set {11RB, 12RB, 16RB, 27RB, 32RB, 33RB}, the number of the total bits of the multi-port frequency domain resource location allocation information is: ⌈ log 2 ⌈ N RB UL / P + 2 ⌉ 4 ⌉ or ⌈ log 2 ⌈ N RB UL / P ⌉ + 2 4 ⌉; and when the system bandwidth N RB UL acquired is not within the set {11RB, 12RB, 16RB, 27RB, 32RB, 33RB}, the number of the total bits of the multi-port frequency domain resource location allocation information is: ⌈ log 2 ⌈ N RB UL / P + 1 ⌉ 4 ⌉ where P is a size of a resource block group, RBG. when the system bandwidth N RB UL acquired is within a set {11RB, 12RB, 16RB, 27RB, 32RB, 33RB}, the number of the total bits of the multi-port frequency domain resource location allocation information is: ⌈ log 2 ⌈ N RB UL / P + 2 ⌉ 4 ⌉ or ⌈ log 2 ⌈ N RB UL / P ⌉ + 2 4 ⌉; and when the system bandwidth N RB UL acquired is not within the set {11RB, 12RB, 16RB, 27RB, 32RB, 33RB}, the number of the total bits of the multi-port frequency domain resource location allocation information is: ⌈ log 2 ⌈ N RB UL / P + 1 ⌉ 4 ⌉ where P is a size of a resource block group, RBG.