Abstract: To study the axial compression performance of the full-scale square reinforced concrete column with spiral and welding composite hoop,2 full-scale concrete square columns with binding hoop and 4full-scale concrete square columns with spiral and welding circular square combination hoop under axial compression test were completed,the ultimate load-carrying capacity,axial deformation and stirrup strain were measured,the effect of different stirrup combination form of bearing capacity and deformation capacity of full-scale axial compressed concrete column were studied,and the indirect reinforcement area conversion formula of square spiral type or welding type hoop was put forward. The test results show that the spiral and welded composite hoop,to a certain extent,can improve the bearing capacity of full-scale concrete square columns,but because of square hoop with big spacing of stirrup legs,compared with the specimen with binding composite hoop,the deformation capacity of the specimen with spiral and welded composite hoop are a little poor at the later stage of the loading. Under axial loads,the bearing capacity of the specimens with same stirrup ratio is directly related to the stirrup stress values. High-strength stirrup can delay the specimen capacity decline rate,and significantly improve the deformation capacity of the specimens.