Cable core wire end identification instrument

The invention discloses a cable core wire end identification instrument, and belongs to the technical field of a cable. The instrument is composed of a master machine and a slave machine which are respectively arranged at the two ends of a cable. The master machine is internally provided with a battery, a switch, an indicator lamp, a buzzer, a collinear clip and a line selector, wherein the indicator lamp and the buzzer are connected in parallel. The slave machine is not provided with a battery and a switch, and is provided with an indication lamp, a buzzer, a collinear clip and a line selector. The collinear clips clamp a cable shielding layer to form a common wire. A common wire is prepared for the cable without the shielding layer. The master machine and the slave machine are connected by taking the shielding layer or the common wire as a wire. A cable core wire which is connected between the line selectors in the master machine and the slave machine is used as the other wire. Knobs of the line selectors are rotated. If the two line selectors are connected with both ends of the same core wire, a circuit between the master machine and the slave machine is switched on. The indicator lamps are lit up and the buzzers sound, which shows that both ends belong to the same core wire. The acousto-optic double insurance display is reliable, and the efficiency is high. The cable core wire end identification instrument is applied to cable core wire end identification.