A data sending method, comprising: determining, by a transmit end, TX, a plurality of non-faulty physical channels from a plurality of physical channels; splitting and encoding, by the TX, to-be-sent data to obtain a plurality of encoded data segments; and transmitting, by the TX, the plurality of encoded data segments through the plurality of non-faulty physical channels, comprising: determining, by the TX, a transmission rate required by a first data segment in the plurality of encoded data segments; and sending the first data segment through at least one non-faulty physical channel based on the transmission rate required by the first data segment, characterized in that the sending the first data segment through at least one non-faulty physical channel based on the transmission rate required by the first data segment comprises: determining a transmission rate of each physical channel; and determining, based on a ratio of the transmission rate required by the first data segment to the transmission rate of each physical channel, the at least one non-faulty physical channel used for transmitting the first data segment, and sending the first data segment through the at least one non-faulty physical channel. determining, by a transmit end, TX, a plurality of non-faulty physical channels from a plurality of physical channels; splitting and encoding, by the TX, to-be-sent data to obtain a plurality of encoded data segments; and transmitting, by the TX, the plurality of encoded data segments through the plurality of non-faulty physical channels, comprising: determining, by the TX, a transmission rate required by a first data segment in the plurality of encoded data segments; and sending the first data segment through at least one non-faulty physical channel based on the transmission rate required by the first data segment, characterized in that the sending the first data segment through at least one non-faulty physical channel based on the transmission rate required by the first data segment comprises: determining a transmission rate of each physical channel; and determining, based on a ratio of the transmission rate required by the first data segment to the transmission rate of each physical channel, the at least one non-faulty physical channel used for transmitting the first data segment, and sending the first data segment through the at least one non-faulty physical channel. determining, by the TX, a transmission rate required by a first data segment in the plurality of encoded data segments; and sending the first data segment through at least one non-faulty physical channel based on the transmission rate required by the first data segment, characterized in that the sending the first data segment through at least one non-faulty physical channel based on the transmission rate required by the first data segment comprises: determining a transmission rate of each physical channel; and determining, based on a ratio of the transmission rate required by the first data segment to the transmission rate of each physical channel, the at least one non-faulty physical channel used for transmitting the first data segment, and sending the first data segment through the at least one non-faulty physical channel. determining a transmission rate of each physical channel; and determining, based on a ratio of the transmission rate required by the first data segment to the transmission rate of each physical channel, the at least one non-faulty physical channel used for transmitting the first data segment, and sending the first data segment through the at least one non-faulty physical channel.