Electrocardiogram lead wire

The utility model discloses an electrocardiogram lead wire, which relates to the technical field of medical instruments for neurology department, and comprises a lead bus and a take-up box, both ends of the lead bus are connected with plugs, the take-up box comprises a wire storage box and a wire distribution box fixed on the outer side of the wire storage box, the inner side of the wire storage box is rotatably connected with a take-up rotating shaft, and the wire distribution box is connected with the take-up rotating shaft. Five rotating wheels are coaxially fixed to the take-up rotating shaft, connecting rods are arranged on the left sides of the five rotating wheels, connectors are fixed to the sides, close to the rotating wheels, of one ends of the connecting rods, connecting holes are formed in the sides, close to the connectors, of the outer side walls of the five rotating wheels, and the same inserting rod is fixed to the tail ends of the five connecting rods; the side, in the junction box, of the ja