Fireproof branch cable capable of preventing electric leakage caused by damage of insulating layer

The invention discloses a fireproof branch cable for preventing an insulating layer from being damaged and leaking electricity, and relates to the technical field of wires and cables, the fireproof branch cable comprises a box body, the surface of the box body is rotatably connected with an opening and closing door, the inner wall of the box body is fixedly connected with an external motor, the output end of the external motor is detachably provided with a take-up cylinder, and a disc cam reciprocating mechanism is arranged at the bottom of the inner wall of the box body. The disc cam reciprocating mechanism is used for conveying the cable and wiping the cable at the same time; the detection mechanism is arranged at the top of the inner wall of the box body, the detection mechanism is used for marking the broken position of the cable and spraying preservative liquid to the cable, through cooperative use of a belt, a second ash leakage plate and a spring, the wiping angle can be changed for cables with differe