A method for sending a channel state information, CSI report, comprising: determining, by a terminal, priorities of M CSI reports, wherein M is a natural number greater than 1; selecting an available channel resource from a channel resource set for transmitting the M CSI reports, wherein the channel resource set comprises J channel resources supporting transmission of the M CSI reports and J is a natural number greater than 1; and transmitting at least one CSI report according to the priorities of the M CSI reports by using the available channel resource, characterized in that wherein selecting the available channel resource from the channel resource set for transmitting the M CSI reports comprises: selecting, by the terminal, L channel resources from the J channel resources to merge the L channel resources into a new channel resource, and using the new channel resource as the available channel resource, wherein an RE set contained in the new channel resource is a union set of RE sets corresponding to the L channel resources, or a subset of the union set, wherein selecting, by the terminal, the L channel resources from the J channel resources to merge the L channel resources into the new channel resource comprises: selecting L1 channel resources from the J channel resources as the available channel resource, wherein an RE contained in a channel resource is selected on each time domain symbol contained in RE sets occupied by the L1 channel resources to form a first RE set, and the at least one CSI report is transmitted on the first RE set at a maximum code rate which is a minimum one among maximum code rates corresponding to the selected channel resources. determining, by a terminal, priorities of M CSI reports, wherein M is a natural number greater than 1; selecting an available channel resource from a channel resource set for transmitting the M CSI reports, wherein the channel resource set comprises J channel resources supporting transmission of the M CSI reports and J is a natural number greater than 1; and transmitting at least one CSI report according to the priorities of the M CSI reports by using the available channel resource, characterized in that wherein selecting the available channel resource from the channel resource set for transmitting the M CSI reports comprises: selecting, by the terminal, L channel resources from the J channel resources to merge the L channel resources into a new channel resource, and using the new channel resource as the available channel resource, wherein an RE set contained in the new channel resource is a union set of RE sets corresponding to the L channel resources, or a subset of the union set, wherein selecting, by the terminal, the L channel resources from the J channel resources to merge the L channel resources into the new channel resource comprises: selecting L1 channel resources from the J channel resources as the available channel resource, wherein an RE contained in a channel resource is selected on each time domain symbol contained in RE sets occupied by the L1 channel resources to form a first RE set, and the at least one CSI report is transmitted on the first RE set at a maximum code rate which is a minimum one among maximum code rates corresponding to the selected channel resources. selecting, by the terminal, L channel resources from the J channel resources to merge the L channel resources into a new channel resource, and using the new channel resource as the available channel resource, wherein an RE set contained in the new channel resource is a union set of RE sets corresponding to the L channel resources, or a subset of the union set, wherein selecting, by the terminal, the L channel resources from the J channel resources to merge the L channel resources into the new channel resource comprises: selecting L1 channel resources from the J channel resources as the available channel resource, wherein an RE contained in a channel resource is selected on each time domain symbol contained in RE sets occupied by the L1 channel resources to form a first RE set, and the at least one CSI report is transmitted on the first RE set at a maximum code rate which is a minimum one among maximum code rates corresponding to the selected channel resources.