The present invention discloses a local network and a method for establishing a connection between a local gateway and a home base station therein. As regards a newly proposed home base station network architecture 1, a mobility management network element receives L-GW information sent by the home base station, selects an L-GW which is located in the same local network as the home base station at least according to the received L-GW information and then informs the L-GW, through an S-GW, of establishing a PDN connection and a tunnel bearer with the home base station, thereby providing a local IP access for a UE. As regards a newly proposed home base station network architecture 2, no direct interface is arranged between the L-GW and the S-GW, the mobility management network element directly selects a corresponding L-GW for establishing a PDN connection for the UE.