A method for reporting a power headroom report, comprising: triggering reporting of a first power headroom report, and determining that a condition of sending the first power headroom report is satisfied, wherein the condition of sending the first power headroom report comprises: determining that uplink data channel transmission occurs in a current transmission time interval; obtaining the first power headroom report, wherein the first power headroom report comprises a first power headroom value, and the first power headroom value comprises a difference between maximum transmitting power of a carrier and a sum of transmitting power of a control channel of the carrier and transmitting power of a data channel of the carrier; characterized by sending the first power headroom report; wherein the sending the first power headroom report comprises: instructing a multiplexing entity to send the first power headroom report and the power headroom report of the data channel of the carrier in the current transmission time interval; wherein the instructing a multiplexing entity to send the first power headroom report and the power headroom report of the data channel of the carrier in the current transmission time interval comprises: instructing a multiplexing entity to use the same Medium Access layer control element, MAC CE, to send the first power headroom report and the power headroom report of a Physical Uplink Shared Channel, PUSCH, of the carrier in the current transmission time interval. triggering reporting of a first power headroom report, and determining that a condition of sending the first power headroom report is satisfied, wherein the condition of sending the first power headroom report comprises: determining that uplink data channel transmission occurs in a current transmission time interval; obtaining the first power headroom report, wherein the first power headroom report comprises a first power headroom value, and the first power headroom value comprises a difference between maximum transmitting power of a carrier and a sum of transmitting power of a control channel of the carrier and transmitting power of a data channel of the carrier; characterized by sending the first power headroom report; wherein the sending the first power headroom report comprises: instructing a multiplexing entity to send the first power headroom report and the power headroom report of the data channel of the carrier in the current transmission time interval; wherein the instructing a multiplexing entity to send the first power headroom report and the power headroom report of the data channel of the carrier in the current transmission time interval comprises: instructing a multiplexing entity to send the first power headroom report and the power headroom report of the data channel of the carrier in the current transmission time interval; wherein the instructing a multiplexing entity to send the first power headroom report and the power headroom report of the data channel of the carrier in the current transmission time interval comprises: instructing a multiplexing entity to use the same Medium Access layer control element, MAC CE, to send the first power headroom report and the power headroom report of a Physical Uplink Shared Channel, PUSCH, of the carrier in the current transmission time interval.