The utility model relates to a cable storing device special for underground perforation in the field of underground perforation operating devices. The technical scheme is that screw threads are arranged at the upper end of a cable storing body, diameter reducing is conducted on the cable storing body under the screw threads, an L-shaped cable groove is prefabricated radially after the lower end of the cable storing body is further reduced, and a connector is locked through a nut at the lower portion after sleeved into the cable storing body with the cable groove. The cable storing device special for the underground perforation has the advantages that by utilizing rotation of the cable storing body on the cable storing device, a cable is released to penetrate through an oil pipe, and power supplied for upper-stage perforation is transferred to a lower-stage device to detonate a lower-stage perforation initiating device so as to achieve the perforation purpose. After utilizing the cable storing device, a pressure increasing bomb in an interlayer device can be omitted, the cable storing device can be used repeatedly and is simple and convenient to use, reliable and environment-friendly, quantity and types of initiating explosive devices are reduced, cost is reduced, and potential safety hazards are avoided.