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. A communication method and apparatus in a wireless communication system is provided. The communication method of a terminal in a wireless communication system includes: connecting to a cellular network via a base station; receiving a control message comprising measurement-related information associated with a wireless local area network (WLAN) from the base station; and measuring the WLAN based on the measurement-related information.