This application provides a positioning method and apparatus. The method includes: obtaining, by a positioning apparatus, information about a transmission environment of each channel in a plurality of channels for a terminal device; determining, by the positioning apparatus, a target channel from the plurality of channels based on the information about the transmission environment of each channel; and locating, by the positioning apparatus, the terminal device based on positioning measurement information of the target channel. The positioning method and apparatus provided in this application helps improve positioning accuracy.