The invention discloses an adjustable unwinding device for cable production. The adjustable unwinding device comprises a base, wherein an installation groove is formed in the base, an adjusting rod and a vertical rod are installed on the top surface of the base, a driving wheel is installed in the installation groove, a rack is connected to the outer side of the driving wheel, a rectangular blockis connected to the rack, a support rod is installed on the top surface of the rectangular block, an unwinding wheel is installed on the top of the support rod, a mounting hole is formed in the top ofthe adjusting rod, a rotating gear is installed on the top of the adjusting rod by virtue of a rotary shaft, a steering handle is fixedly connected to one end of the rotary shaft, a rotary rod is connected to the outer side of the rotating gear, an adjusting wheel is installed at the bottom of the rotary rod, and a pulley is installed on the top of the vertical rod. The position of the unwindingwheel is adjusted, and the pressing force of the adjusting wheel on a cable is changed, so that the cable tension is proper, the subsequent processing of the cable is smooth, the rate of finished products is high, and the applicability is wide.