A capability exposure method, characterized in that the capability exposure method comprises: receiving, by a capability exposure function entity, a requirement of a third party on a 4G/5G mobile network, wherein the third party comprises a third party application, a service provider, a virtual operating company; acquiring, by the capability exposure function entity, current network information about the 4G/5G mobile network, wherein the current network information comprises underlying network information, or comprises the underlying network information and existing network information; creating, by the capability exposure function entity, dedicated networking information on the basis of the requirement and the current network information, wherein the dedicated networking information comprises any one of or any combination of: a dedicated network type, a network topology, dedicated network element information, a connecting relationship between network elements, a network resource requirement and a user type; and sending, by the capability exposure function entity, the dedicated networking information to a Network Orchestrator Function, NOF, entity, wherein the dedicated networking information is adopted to instruct creation of at least one of a dedicated network or a dedicated network element by the NOF entity; the dedicated network is formed by a part of network elements of an existing network and dedicated network elements, or is formed by dedicated network elements; the capability exposure method further comprises: before the creating, by the capability exposure function entity, the dedicated networking information on the basis of the requirement and the current network information, if the capability exposure function entity determines that the network capability of the current network does not meet the requirement of the third party on the 4G/5G mobile network according to the current network information, sending a requirement rejection message to the third party, and notifying the network capability of the current network to the third party; receiving, by the capability exposure function entity, a requirement updated according to the network capability of the current network, of the third party; and for the updated requirement, executing the creating the dedicated networking information on the basis of the requirement and the current network information. receiving, by a capability exposure function entity, a requirement of a third party on a 4G/5G mobile network, wherein the third party comprises a third party application, a service provider, a virtual operating company; acquiring, by the capability exposure function entity, current network information about the 4G/5G mobile network, wherein the current network information comprises underlying network information, or comprises the underlying network information and existing network information; creating, by the capability exposure function entity, dedicated networking information on the basis of the requirement and the current network information, wherein the dedicated networking information comprises any one of or any combination of: a dedicated network type, a network topology, dedicated network element information, a connecting relationship between network elements, a network resource requirement and a user type; and sending, by the capability exposure function entity, the dedicated networking information to a Network Orchestrator Function, NOF, entity, wherein the dedicated networking information is adopted to instruct creation of at least one of a dedicated network or a dedicated network element by the NOF entity; the dedicated network is formed by a part of network elements of an existing network and dedicated network elements, or is formed by dedicated network elements; the capability exposure method further comprises: before the creating, by the capability exposure function entity, the dedicated networking information on the basis of the requirement and the current network information, if the capability exposure function entity determines that the network capability of the current network does not meet the requirement of the third party on the 4G/5G mobile network according to the current network information, sending a requirement rejection message to the third party, and notifying the network capability of the current network to the third party; receiving, by the capability exposure function entity, a requirement updated according to the network capability of the current network, of the third party; and for the updated requirement, executing the creating the dedicated networking information on the basis of the requirement and the current network information.