A method for sending of Hybrid Automatic Repeat reQuest, HARQ, information, comprising: determining, by a data receiving end, a number of scheduling resources and a feedback number of expected maximum feedback Acknowledgements, ACKs, according to resource configuration information; sending, by the data receiving end, HARQ information to a data sending end according to the feedback number of the expected maximum feedback ACKs and the number of the scheduling resources determined according to resource configuration information by: determining (100, 300), by the data receiving end, the number of bits of HARQ according to the number of the scheduling resources determined according to resource configuration information and the feedback number of expected maximum feedback ACKs determined according to resource configuration information; and determining (101, 301), by the data receiving end, HARQ information according to detection results for received transport blocks, and sending (101, 302) the HARQ information to the data sending end by using the determined number of bits of HARQ; wherein the feedback number is M, and the number of the scheduling resources determined according to resource configuration information is N; and the N is a positive integer greater than or equal to 3, and the M is a positive integer less than the N; wherein the M is a value pre-determined by the data receiving end and the data sending end; and M < N − 1 2, wherein └ ┘ represents round-down, and wherein the number of bits of HARQ is K, K = log 2 ∑ i = 0 M C N i, wherein ┌ ┐ represents round-up. determining, by a data receiving end, a number of scheduling resources and a feedback number of expected maximum feedback Acknowledgements, ACKs, according to resource configuration information; sending, by the data receiving end, HARQ information to a data sending end according to the feedback number of the expected maximum feedback ACKs and the number of the scheduling resources determined according to resource configuration information by: determining (100, 300), by the data receiving end, the number of bits of HARQ according to the number of the scheduling resources determined according to resource configuration information and the feedback number of expected maximum feedback ACKs determined according to resource configuration information; and determining (101, 301), by the data receiving end, HARQ information according to detection results for received transport blocks, and sending (101, 302) the HARQ information to the data sending end by using the determined number of bits of HARQ; wherein the feedback number is M, and the number of the scheduling resources determined according to resource configuration information is N; and the N is a positive integer greater than or equal to 3, and the M is a positive integer less than the N; wherein the M is a value pre-determined by the data receiving end and the data sending end; and M < N − 1 2, wherein └ ┘ represents round-down, and wherein the number of bits of HARQ is K, K = log 2 ∑ i = 0 M C N i, wherein ┌ ┐ represents round-up. determining (100, 300), by the data receiving end, the number of bits of HARQ according to the number of the scheduling resources determined according to resource configuration information and the feedback number of expected maximum feedback ACKs determined according to resource configuration information; and determining (101, 301), by the data receiving end, HARQ information according to detection results for received transport blocks, and sending (101, 302) the HARQ information to the data sending end by using the determined number of bits of HARQ; wherein the feedback number is M, and the number of the scheduling resources determined according to resource configuration information is N; and the N is a positive integer greater than or equal to 3, and the M is a positive integer less than the N; wherein the M is a value pre-determined by the data receiving end and the data sending end; and M < N − 1 2, wherein └ ┘ represents round-down, and wherein the number of bits of HARQ is K, K = log 2 ∑ i = 0 M C N i, wherein ┌ ┐ represents round-up.