Due to their high specific strength, aluminum alloys are promising materials of lightweight structure. However, their formability at room temperature is poor due to pronounced natural ageing. Therefore, W-temper stretch bending for aluminum alloy was developed to create bent parts of extruded profiles, thus reducing the cost impact of raw material and finished machining. In the present paper, a new displacement-controlled secondary stretch bending (DSSB) was developed. In order to obtain the precise bending, experimental investigations for extruded 7075 aluminum alloy profile with Y-section are carried out. Firstly, experimental method of DSSB is proposed. Secondly, the DSSB process of 7075 aluminum alloy extrusion at different process parameters are investigated. The results show that: (1) Secondary stretch bending can effectively improve forming accuracy comparing one-step stretch bending. (2) Increasing post-stretching displacement can reduce the springback, while the cross-section distortion maybe Increase. (3) Improving friction condition can reduce the springback.