The invention belongs to the technical field of cable equipment, and particularly relates to a cable manufacturing device and a cable manufacturing process. The cable manufacturing device comprises afirst extruding machine, a second extruding machine, a first water tank, a pay-off rack and a wire winding rack. The pay-off rack, the first extruding machine, the second extruding machine, the firstwater tank and the wire winding rack are sequentially arranged. A conductor penetrates through the first extruding machine and the second extruding machine in sequence. An insulating layer and a protective layer are sequentially wrapped on the surface of the conductor through the first extruding machine and the second extruding machine, so that the manufacturing of a cable is completed. The manufacturing of the cable becomes simpler. Two supports are arranged on the pay-off rack. A rotating disc can be placed between the two supports. Therefore, a power supply does not need to be turned off for the replacement of the rotating disc during the cable manufacturing process. The manufacturing process of the cable is simpler and more convenient by means of the cable manufacturing device. According to the invention, the cable manufacturing device enables the manufacturing process of the cable to be simpler, so that the labor intensity and the labor cost of workers are reduced.