A hybrid automatic repeat request feedback method, applied to a receive end, wherein the method comprises: receiving data information sent by a transmit end, wherein the data information comprises target data; determining a measurement value of the target data, wherein the measurement value is used to indicate reliability of a physical channel for transmitting the target data; generating feedback information based on the measurement value without that a CRC check has been performed on the target data, wherein the feedback information carries an acknowledgement, ACK, or a negative acknowledgement, NACK; and sending the feedback information to the transmit end, so that the transmit end determines, based on the feedback information, whether the target data needs to be retransmitted, wherein the measurement value is a first quality value used to indicate a signal-to-noise ratio of the physical channel after the data information is equalized, and the generating feedback information based on the measurement value comprises: when the first quality value is less than a quality threshold, generating the feedback information carrying the NACK; or when the first quality value is not less than a quality threshold, generating the feedback information carrying the ACK, wherein the quality threshold is determined based on at least one of a coding scheme, a code block length, and a bit rate of the target data, wherein the first quality value is a value of accumulated conditional mutual information, ACMI, the quality threshold is a symbol transmission rate of the target data, and the determining a measurement value of the target data comprises: determining a bit-interleaved coded modulation, BICM, capacity of the physical channel; and determining the value of the ACMI based on the BICM capacity and a retransmission and combination mode of the target data. receiving data information sent by a transmit end, wherein the data information comprises target data; determining a measurement value of the target data, wherein the measurement value is used to indicate reliability of a physical channel for transmitting the target data; generating feedback information based on the measurement value without that a CRC check has been performed on the target data, wherein the feedback information carries an acknowledgement, ACK, or a negative acknowledgement, NACK; and sending the feedback information to the transmit end, so that the transmit end determines, based on the feedback information, whether the target data needs to be retransmitted, wherein the measurement value is a first quality value used to indicate a signal-to-noise ratio of the physical channel after the data information is equalized, and the generating feedback information based on the measurement value comprises: when the first quality value is less than a quality threshold, generating the feedback information carrying the NACK; or when the first quality value is not less than a quality threshold, generating the feedback information carrying the ACK, wherein the quality threshold is determined based on at least one of a coding scheme, a code block length, and a bit rate of the target data, wherein the first quality value is a value of accumulated conditional mutual information, ACMI, the quality threshold is a symbol transmission rate of the target data, and the determining a measurement value of the target data comprises: determining a bit-interleaved coded modulation, BICM, capacity of the physical channel; and determining the value of the ACMI based on the BICM capacity and a retransmission and combination mode of the target data. when the first quality value is less than a quality threshold, generating the feedback information carrying the NACK; or when the first quality value is not less than a quality threshold, generating the feedback information carrying the ACK, wherein the quality threshold is determined based on at least one of a coding scheme, a code block length, and a bit rate of the target data, wherein the first quality value is a value of accumulated conditional mutual information, ACMI, the quality threshold is a symbol transmission rate of the target data, and the determining a measurement value of the target data comprises: determining a bit-interleaved coded modulation, BICM, capacity of the physical channel; and determining the value of the ACMI based on the BICM capacity and a retransmission and combination mode of the target data. determining a bit-interleaved coded modulation, BICM, capacity of the physical channel; and determining the value of the ACMI based on the BICM capacity and a retransmission and combination mode of the target data.