Implementations of the present disclosure relate to a wireless communication method and a terminal device. The method includes: detecting, by a terminal device, a first type of Synchronous Signal Block (SSB) at a frequency on an asynchronous raster; determining, by the terminal device, a frequency domain position of a Control Resource Set (CORESET) of Remaining Minimum System Information (RMSI) associated with the first type of SSB based on the first type of SSB.