The invention provides a code spraying device used for a cable, and relates to a code spraying device. The code spraying device used for the cable comprises a wire feeding device, a box body, a code spraying device, a wire retreating device and an air cylinder. The code spraying device is arranged on the upper part of the box body. The two sides of the code spraying device are respectively provided with the wire feeding device and the wire retreating device. The code spraying device comprises a vertical plate A and a vertical plate B which are arranged on the upper part of the two sides of the box body in a spacing and parallel way. A fixed ink box and a slidably arranged slide strip are respectively arranged on the upper part of the two ends of the vertical plate A and the vertical plate B. A spongy layer is arranged on the internal surface of the ink box. An information clamping strip is clamped on the external part of the spongy layer. A slide slot A and a slide slot B are respectively arranged on the vertical plate A and the vertical plate B. The rolling wheels arranged at the two sides of the lower part of the slide strip are slidably arranged in the slide slot A and the slide slot B respectively. A connecting rod is arranged at the middle part of the external side surface of the slide strip. The connecting rod is fixedly connected with the piston rod of the air cylinder. The code spraying device used for the cable is relatively high in code spraying speed, clear in printing and neat and rapid in wire retreating.