Provided are an HARQ-ACK codebook determination method and apparatus, a terminal and a storage medium. The method includes: dividing candidate PDSCHs in at least one slot into groups according to candidate PDSCH types and end times of the candidate PDSCHs, and forming pieces of HARQ-ACK information corresponding to the divided candidate PDSCHs; and concatenating the pieces of HARQ-ACK information corresponding to the candidate PDSCHs to obtain an HARQ-ACK codebook.