The utility model provides a cable releasing disc with a gear type brake device. The objective of the utility model is to solve the problem that there are potential safety hazards in the prior art where an iron bar is used for stopping a releasing disc from rotating. The cable releasing disc comprises a pedestal, a rotating shaft, a disc body and a brake block which is installed on the pedestal and used for braking the disc body. The rotating shaft is perpendicular to and pivoted to the pedestal. A big gear is pivoted to the lower part of the pedestal. A vertical rod parallel to the rotating shaft is pivoted to the pedestal. The vertical rod penetrates through the pedestal and the lower end is fixedly connected with a small gear engaged to the big gear. The brake block is fixedly connected to the upper end of the vertical rod. A long rod used for rotating the big gear is fixedly connected to the big gear. According to the utility model, it is labor saving to use the long rod to rotate the big gear which drives the small gear, thereby allowing the small gear to rotate; and the vertical rod is used for driving the brake block so that the brake block presses the releasing disc body and stops the releasing disc from rotating, so the cable releasing disc is labor saving, safe, reliable and high in working efficiency, and wires are effectively prevented from continuously moving forward and being disordered.