Embodiments of this application disclose a routing management method, used to advertise an address segment routing policy. The method in the embodiments of this application includes: A control plane function assigns an internet protocol IP address to user equipment. The control plane function determines an IP address segment, where the IP address belongs to the IP address segment. The control plane function sends information used to identify the IP address segment to a user plane function, where the IP address segment is used to advertise a routing policy.