The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present application provides a method for transmitting uplink control information (UCI), comprising: detecting a physical el downlink control channel (PDCCH) and receiving a physical downlink shared channel (PDSCH) scheduled by the PDCCH, by a user equipment (UE); determining, by the UE, hybrid automatic repeat request acknowledge (HARQ-ACK) information to be fed back and physical uplink control channel (PUCCH) resource for transmitting the UCI according to at least one of the following: slot lengths of downlink bandwidth part (BWP) and uplink BWP, HARQ-ACK codebook information and UE's processing capability requirements; transmitting, by the UE, the HARQ-ACK information on the PUCCH resource. The method of the present invention may support a method for determining the HARQ-ACK codebook while multiple PUCCH resources and multiple slot lengths.