This application provides embodiments of an uplink power control method and an apparatus, so that impact of interference between network devices on uplink signal transmission can be reduced, thereby helping increase a probability of successfully receiving an uplink signal by a network device. The method includes: determining, by a network device, an uplink power adjustment parameter value of a terminal device, where the uplink power adjustment parameter value is related to cross-link interference received by the network device; and sending, by the network device, information about the uplink power adjustment parameter value to the terminal device.