Network service method, device and system and storage medium

The invention discloses a network service method, device and system and a storage medium, and relates to the field of mobile communication. The network service method comprises: a base station sending a first bearer message to a core network device, the first bearer message comprising an identifier of a third-party service provider supported by a cell of the base station; and the base station receives a second bearer message sent by the core network device, the second bearer message comprising an identifier of a third-party service provider supported by the core network device. According to the embodiment of the invention, a network operator can authorize with a vertical industry network or a third-party network, so that unauthorized users can obtain network services, for example, public users can obtain private network services, or services under other networks are provided for private network users. Therefore, the user can enjoy the cross-network service, and the flexibility of the network service is improv