A method for measuring channel state information, comprising: transmitting, by a base station, BS, multiple sets of channel state indication reference signal, CSI-RS, resources; and notifying a user equipment, UE, of an aggregation mode of the CSI-RS resources, so that after the UE aggregates the multiple sets of CSI-RS resources according to the aggregation mode of the CSI-RS resources to form a measurement source, the UE performs CSI measurement according to a channel corresponding to CSI-RS ports on the measurement source; wherein the notifying a user equipment UE of an aggregation mode of the CSI-RS resources comprises one of following steps: sending a bit map to the UE, wherein the number of bits in the bit map is equal to the number of sets of the CSI-RS resources and each bit corresponds to one set of CSI-RS resources, and instructing, by using each bit value, the UE to aggregate corresponding CSI-RS resources; or notifying, by transmitting one set of CSI-RS resources in one CSI-RS transmission cycle, the UE of aggregating the currently transmitted CSI-RS resources with a CSI-RS resource with a same resource number in a previous CSI-RS transmission cycle, and notifying, by transmitting more than one set of CSI-RS resources in one CSI-RS transmission cycle, the UE of stopping the aggregation. transmitting, by a base station, BS, multiple sets of channel state indication reference signal, CSI-RS, resources; and notifying a user equipment, UE, of an aggregation mode of the CSI-RS resources, so that after the UE aggregates the multiple sets of CSI-RS resources according to the aggregation mode of the CSI-RS resources to form a measurement source, the UE performs CSI measurement according to a channel corresponding to CSI-RS ports on the measurement source; wherein the notifying a user equipment UE of an aggregation mode of the CSI-RS resources comprises one of following steps: sending a bit map to the UE, wherein the number of bits in the bit map is equal to the number of sets of the CSI-RS resources and each bit corresponds to one set of CSI-RS resources, and instructing, by using each bit value, the UE to aggregate corresponding CSI-RS resources; or notifying, by transmitting one set of CSI-RS resources in one CSI-RS transmission cycle, the UE of aggregating the currently transmitted CSI-RS resources with a CSI-RS resource with a same resource number in a previous CSI-RS transmission cycle, and notifying, by transmitting more than one set of CSI-RS resources in one CSI-RS transmission cycle, the UE of stopping the aggregation. sending a bit map to the UE, wherein the number of bits in the bit map is equal to the number of sets of the CSI-RS resources and each bit corresponds to one set of CSI-RS resources, and instructing, by using each bit value, the UE to aggregate corresponding CSI-RS resources; or notifying, by transmitting one set of CSI-RS resources in one CSI-RS transmission cycle, the UE of aggregating the currently transmitted CSI-RS resources with a CSI-RS resource with a same resource number in a previous CSI-RS transmission cycle, and notifying, by transmitting more than one set of CSI-RS resources in one CSI-RS transmission cycle, the UE of stopping the aggregation.