The invention discloses a fastened steel pipe concrete column confined by pre-stress and a reinforcement method thereof. The column is mainly applied to the reinforcement of a monolayer, multilayer or high-rise frame column which exceeds the limit value of the strength, rigidity or axial compression ratio. The basic principle of the invention is as follows: transverse pre-tensioning of a steel plate which is added to the surface of a rectangular or round reinforced concrete column is built up by screwing down a shear high strength bolt and the resultant force thereof acts on the surface of the reinforced concrete column; in accordance with the principle that acting force equals to counter acting force, the surface of the reinforced concrete column generates a counter acting force (positive pressure) towards the inner wall of the steel plate; in such way, friction force, which is corresponding to the positive pressure and is the so-called shear resistant bearing capacity in a project, is generated between the concrete surface and the inner wall of the steel plate, thereby achieving the loaded effect of the current steel pipe concrete column that is manufactured by casting concrete on the prepared steel pipe. Due to the existence of the transverse pre-stress, the mechanical effect of the steel pipe concrete column in the invention is better than the current one.