A HARQ-ACK transmission method and an apparatus. A network device configures at least two common PUCCH resource sets for a terminal device, and sends, to the terminal device, configuration information indicating the at least two common PUCCH resource sets. After receiving the configuration information from the network device, the terminal device determines, from the at least two common PUCCH resource sets, a first PUCCH resource used to send HARQ-ACK information, and sends the HARQ-ACK information to the network device based on the first PUCCH resource. Available PUCCH frequency domain resources are able to be added for the terminal device in a same slot. PUCCH frequency domain resource collision is reduced, and a transmission delay that is increased to avoid the PUCCH frequency domain resource collision is reduced.