To explore the method of spiral hoops made of steel bar for prestressed concrete and study the mechanism and failure process of concrete column confined by high-strength spiral hoops, the axial compression test of 24 concrete columns confined by steel bar for prestressed concrete spiral hoops and 4 concrete columns confined by steel rebar are carried out. The results show that the ultimate tensile stress of prestressed concrete spiral hoops can be increased with the concrete strength and the ratio of hoop. Based on the results of test, when the columns under axial compression reach the ultimate bearing capacity, the relationship between the tensile strain of spiral hoops and the degree of constraint is suggested, and the calculation formulas are put forward.