A method for processing decoding a concatenation of an outer cyclic redundancy check, CRC, code with an inner Turbo code, comprising: acquiring a combined generator matrix G com from the Turbo code generator matrix G turbo and the CRC generator matrix G crc, and acquiring a log likelihood ratio sequence outputted by a Turbo code decoder; and performing ordered statistics decoding, OSD, of the Turbo code by using the combined generator matrix G com and the log likelihood ratio sequence based on CRC-assisted iteration of the Turbo code, and obtaining a decoding processing result; wherein the performing CRC-assisted iterative ordered statistics decoding of the Turbo code by using the combined generator matrix G com and the log likelihood ratio sequence, and obtaining the decoding processing result comprises: acquiring a hard-decision sequence C according to the log likelihood ratio sequence, wherein there is mapping between the log likelihood ratio sequence, the hard-decision sequence C, and the combined generator matrix G com; obtaining a reliability sequence by calculating absolute values of log likelihood ratios in the log likelihood ratio sequence; sorting the absolute values of the log likelihood ratios in the reliability sequence, and obtaining an ordered combined generator matrix O 1 (G com) and a hard-decision sequence O 1 according to the mapping; obtaining, by Gauss-eliminating the ordered combined generator matrix O 1 (G com), a Gauss-eliminated matrix G gauss and a permutation pattern O 2, and obtaining a reordered hard-decision sequence O 2 (O 1) according to the mapping and the permutation pattern O 2; and encoding first K m columns of the hard-decision sequence O 2 (O 1) and the Gauss-eliminated matrix G gauss to obtain a code word C̃ after ordered statistics decoding, and performing reverse reordering to obtain the decoding processing result C 1 = O 1 -1 (O 2 -1), wherein K m is the length of an original information sequence. acquiring a combined generator matrix G com from the Turbo code generator matrix G turbo and the CRC generator matrix G crc, and acquiring a log likelihood ratio sequence outputted by a Turbo code decoder; and performing ordered statistics decoding, OSD, of the Turbo code by using the combined generator matrix G com and the log likelihood ratio sequence based on CRC-assisted iteration of the Turbo code, and obtaining a decoding processing result; wherein the performing CRC-assisted iterative ordered statistics decoding of the Turbo code by using the combined generator matrix G com and the log likelihood ratio sequence, and obtaining the decoding processing result comprises: acquiring a hard-decision sequence C according to the log likelihood ratio sequence, wherein there is mapping between the log likelihood ratio sequence, the hard-decision sequence C, and the combined generator matrix G com; obtaining a reliability sequence by calculating absolute values of log likelihood ratios in the log likelihood ratio sequence; sorting the absolute values of the log likelihood ratios in the reliability sequence, and obtaining an ordered combined generator matrix O 1 (G com) and a hard-decision sequence O 1 according to the mapping; obtaining, by Gauss-eliminating the ordered combined generator matrix O 1 (G com), a Gauss-eliminated matrix G gauss and a permutation pattern O 2, and obtaining a reordered hard-decision sequence O 2 (O 1) according to the mapping and the permutation pattern O 2; and encoding first K m columns of the hard-decision sequence O 2 (O 1) and the Gauss-eliminated matrix G gauss to obtain a code word C̃ after ordered statistics decoding, and performing reverse reordering to obtain the decoding processing result C 1 = O 1 -1 (O 2 -1), wherein K m is the length of an original information sequence. acquiring a hard-decision sequence C according to the log likelihood ratio sequence, wherein there is mapping between the log likelihood ratio sequence, the hard-decision sequence C, and the combined generator matrix G com; obtaining a reliability sequence by calculating absolute values of log likelihood ratios in the log likelihood ratio sequence; sorting the absolute values of the log likelihood ratios in the reliability sequence, and obtaining an ordered combined generator matrix O 1 (G com) and a hard-decision sequence O 1 according to the mapping; obtaining, by Gauss-eliminating the ordered combined generator matrix O 1 (G com), a Gauss-eliminated matrix G gauss and a permutation pattern O 2, and obtaining a reordered hard-decision sequence O 2 (O 1) according to the mapping and the permutation pattern O 2; and encoding first K m columns of the hard-decision sequence O 2 (O 1) and the Gauss-eliminated matrix G gauss to obtain a code word C̃ after ordered statistics decoding, and performing reverse reordering to obtain the decoding processing result C 1 = O 1 -1 (O 2 -1), wherein K m is the length of an original information sequence.