Information sending method, device and system

The invention discloses an information sending method comprising the following steps of: acquiring a to-be-sent region of a to-be-sent information; determining a first base station identification corresponding to the to-be-sent region, and acquiring a first unique user identification corresponding to the first base station identification; and sending the to-be-sent information to a mobile terminal where a first user is in, wherein the first user is the user identified by the first unique user identification. The invention also discloses an information sending device comprising a to-be-sent region acquiring module, a user identification determining module and a to-be-sent information sending module. In the embodiment of the invention, the first base station identification corresponding to the to-be-sent region is determined, the first unique user identification corresponding to the first base station identification is acquired, and the to-be-sent information is sent to the corresponding first user, so that a server can obtain the information on the current actual geographical positions of users of the mobile terminal, the fineness for sending information to the users of the mobile terminal according to regions is improved, and the information release effect is improved.