Method, device and system for acquiring service by network terminal

Disclosed in embodiments of the present invention are a method, device and system for acquiring a service by a network terminal. The method comprises: receiving, by the network terminal, a first message for requesting a first service, the first message carrying a destination IP address and a source IP address; if the destination IP address being in a first address network segment of the first service is determined, transmitting a second message for requesting the service to an upper-layer network, the source IP address of the second message being the first IP address of the network terminal; and responding to the transmission of the second message, and receiving the requested service transmitted by the upper-layer network. Through the technical solution above, a user terminal can transmit multiple service messages by adopting one IP address, the network terminal queries a routing table after receiving the messages and transmits the messages to servers of different services, thereby acquiring multiple services, so that the user terminal in an existing network does not need to be replaced, and resources are saved.