The invention relates to a cable release pulley which is designed to solve the improper designs in the structure of a cable release pulley in the prior art. Due to the improper designs, the service lifetime of the cable release pulley is short. According to the cable release pulley of the invention, a first main pulley and a second main pulley are arranged in a frame. The frame is provided with a first auxiliary pulley through a first support; and the frame is provided with a second auxiliary pulley through a second support; the supports comprise an upper half part arranged on the first main pulley and a lower half part arranged on the second pulley; the upper half part and the lower half part are connected in a rotation manner through a pin shaft and the upper half part and the lower half part are locked tightly by a positioning pin. In contrast to the prior art, for the arrangement of the first auxiliary pulley and the second auxiliary pulley, the direction of the wires can be guided, therefore, reducing the bending of wires in the process of cable release. In addition, in the actual cable release, the arrangement of the first auxiliary pulley and the second auxiliary pulley enables the wires to be in the right positions, therefore, extending the service life of the cable release pulley.