The utility model relates to a stay wire steel strand bending device. The stay wire steel strand bending device is characterized by comprising a base plate (1); a center cylinder (3) is fixed on the base plate (1); two fixed columns (2) are arranged beside the center cylinder (3); the stay wire steel strand bending device further comprises two operating handles (4); and one end of each operating handle (4) is hinged to one of the fixed columns (2). As try-on proves, after the stay wire steel strand bending device is used, time for stay wire manufacturing can be effectively shortened, and the stay wire steel strand bending device is simple to operate and easy to control; and the size and the shape of a manufactured steel strand can be tightly combined with those of a tongue plate, and therefore technical quality is effectively improved.