| In this paper, construction control on concrete filled steel tubes both domestic and abroad are reviewed and the current state of construction control is analyzed at first. Then the prestressed concrete filled steel tubes(CFST) structure is introduced, what the aim is to set prestressing force in CFST members in order to enhance the bearing capacity of the structures. On the basis of establishing the model of axial tensile members of prestressed concrete filled steel tubes, a two-step design method is used to explain the principle of work and the stability bearing capacity of the structure at the stage what prestressing is analyzed. According to the characteristics of the unbonded prestressed concrete filled steel tubes, the factors affecting the prestress losses are analyzed and the basic method of caculating the prestress losses is induced. By satisfying the equilibrium of inter-force and coordination of deformation, the stress and the loading capacity of the prestressed concrete filled steel tubes structure are analyzed and caculated.By studying its calculation theory, it is pointed out that the prestressed CFST structure not only enhance the application scope of CFST effectively and improves its quality, but also gives full advantages of the composited structures.
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