The invention discloses a steel tube tower which comprises a base flange, steel tube poles and a wire hanging arm.Flanges are arranged at the upper end and the lower end of the base flange and are integrally connected with one another by reinforcing ribs, and an end of the base flange is fixed onto a base plate; a first connecting flange and a second connecting flange are respectively arranged at two ends of each steel tube pole, each first connecting flange is connected with an end of the base flange, and each second connecting flange is connected with a flange plate; a connecting piece is arranged at the tail end of the wire hanging arm and can be mounted on the flange plate; the wire hanging arm is mounted on the flange plate and can rotate on the flange plate.The steel tube tower has the advantages that the steel tube tower is convenient to use and high in secondary utilization rate; the steel tube tower can be disassembled to obtain a plurality of sections of steel tube poles, is convenient to transport, small in occupied area, short in construction period and free of influence on secondary utilization of lands and can be mounted conveniently and quickly; the steel tube tower which is of a cylindrical or tower-shaped structure can be constructed according to difference of the steel tube pole, and accordingly different construction requirements can be met.