The invention relates to a network capable of switching a terminal from 3GPP to a wireless local area network (WLAN). The network comprises a 3GPP access network, a WLAN access network and a 3GPP core network, wherein a home location register, a service node, a gateway service node and a terminal management server is also arranged in the 3GPP core network; and a WLAN access gateway is arranged between the WLAN access network and the 3GPP core network. The network has the advantages of realizing seamless switching of services without mobile IP technology, supporting superposed mobile IP technology application, meeting the requirement of EPC network evolution in the future, not changing original equipment of the conventional core network, quickly pushing WLAN and 3GPP fused services, promoting the development of fixed mobile convergence (FMC) services, along with low network design and realization cost and simple realization of terminal equipment.