The invention provides a local wireless access system, a method and a local access gateway. The purposes that network deployment cost is lowered and cost performance is improved when local internet service is accessed are achieved. The local wireless access system comprises a wireless access device and the local access gateway. The wireless access device is used for building or rebuilding a bearing on a gap between user equipment and the wireless access device, and achieves data transmission with the user equipment through the bearing. The local access gateway is connected with an authentication device in a home network and at least one wireless access device, and is used for building a bearing or a tunnel for the user equipment with the wireless access device, and conducting authentication on the user equipment through interaction with the authentication device in the home core network. According to the local wireless access system, local access framework is simple in networking and high in efficiency, and cost during networking can be lowered.