The invention discloses a method of forcing reorientation for user accessing to network, overlaying Portal gateway on accessing device, and the Portal gateway is connected to IP core network, and themethod contains the following steps: appointing the user needing forced reorientation and arranging forcing state for him; the user accesses to the network through the accessing device; the user sendsan HTTP request; the Portal gateway receives the request and judges if the user is a user needing forced reorientation: if yes, judging if the forcing state of the user is eliminated: if no, the Portal gateway reorientates the HTTP request to the corresponding Portal server. The method can support wideband or narrowband users.