The invention discloses a thread bracket for sewing reflective stripes. The thread bracket comprises thread rollers. A rack is formed by two round steel pipes which are spaced by a distance and fixed to one end of a sewing machine. An inner threading plate and an outer threading plate are arranged in the middle of the rack, a top layer threading plate is fixed to the head of the rack, a lower thread tray is arranged below the inner threading plate and the outer threading plate, an upper thread tray is arranged between the inner threading plate and the outer threading plate, the upper thread rollers are arranged on the upper thread tray, the lower thread rollers are arranged on the lower thread tray, threading holes are formed in the plate surfaces of the inner threading plate and the outer threading plate, a thread adding device is fixed to a machine head at one end of the sewing machine, a thread guide pipe is arranged in a suspended mode at the position above the thread adding device and in the middle of the inner threading plate, thread guide holes are formed in the thread guide pipe, thread separating rollers are arranged on the thread adding device, a thread distribution plate is fixed to the part, blow the thread separating rollers, of the sewing machine, two sets of threads are arranged in thread outlet holes of the thread distribution plate respectively in a penetrating mode, and the four threads in each set are threaded into a sewing needle to carry out sewing along the two sides of each reflective stripe.