This application relates to the field of mobile communication, and in particular, to a method, an apparatus, and a system for selecting MEC node. The method includes: receiving a domain name request initiated by a terminal forwarded by the UPF, the domain name request comprising at least one of: a domain name, a destination address, or a protocol port information; obtaining a corresponding edge-application VIP from the GSLB based on the domain name request; returning a domain name response to the terminal, the domain name response comprising the edge-application VIP; receiving a service request initiated from the terminal forwarded by the UPF, a destination address of the service request being the edge-application VIP; and determining a corresponding MEC processing server according to the service request and a preset offloading policy, and offloading the service request to the corresponding MEC processing server.