Embodiments of this application disclose a wireless communication method, a network device, and a terminal device, to reduce receiving performance loss of a terminal device that is caused by resource reallocation. The method includes: sending, by the network device, a physical downlink control channel, where the PDCCH indicates one or more time-frequency resources scheduled by the network device; reallocating, by the network device, at least one of the time-frequency resource; and sending, by the network device, at least one piece of posterior resource indication information, where the at least one piece of posterior resource indication information indicates the reallocated time-frequency resource in the time-frequency resources.