Disclosed by the embodiments of the present application are a method and an apparatus for determining a HARQ-ACK codebook and HARQ-ACK information. The method for determining an HARQ-ACK codebook includes: setting a plurality of physical downlink shared channel (PDSCH) candidate resources having an overlapped time domain in a downlink slot into one candidate resource group, and determining HARQ-ACK information corresponding to the candidate resource group; and determining a corresponding downlink subslot for the HARQ-ACK information according to a preset rule, and determining a semi-static HARQ-ACK codebook. By means of the present application, the problem that a semi-static HARQ-ACK codebook cannot be determined when a PDSCH candidate resource is cross-subslot can be solved, thereby yielding the effect of meeting the HARQ-ACK requirement in the case that the PDSCH candidate resource is cross-subslot.