Provided are a communication method and device. The method includes: a terminal device receives, from a network device, indication information indicating a working frequency band attribute or system attribute of the network device, the working frequency band attribute representing whether a working frequency band of the network device is a licensed or unlicensed frequency band and the system attribute representing whether the network device works in a licensed or unlicensed frequency band system; and the terminal device performs communication with the network device according to the working frequency band attribute or the system attribute. When roaming in different countries or regions, the terminal device can effectively know whether a frequency band of a network presently to access is an unlicensed or licensed frequency band and thus execute an operation to implement effective data transmission in different frequency bands even though different spectrum division manners are adopted there.