The invention discloses a method and a device for distributing bandwidth. The method comprises the following steps of: obtaining the bandwidth required by respective active hosts; ordering the bandwidth required by respective active hosts; distributing the available bandwidth of Internet access link according to the ordered bandwidth required by respective active hosts; counting the data by the host in the local area network, distributing the bandwidth and dispatching according to the bandwidth which is distributed according to the host. Accordingly, the host in the local area network can obtain bandwidth impartially, and the Internet access link bandwidth can be fully utilized.