The invention provides a wiring wire finder which comprises a master machine and a slave machine. The master machine comprises a master machine shell, a master machine circuit board is arranged in the master machine shell and connected with a plurality of sending wires, and alligator clips are arranged on the sending wires. The slave machine comprises a slave machine shell, a slave machine circuit board is arranged in the slave machine shell and connected with a plurality of receiving wires, and alligator clips are arranged on the receiving wires. Due to the adaption of the technical scheme, master machine ends are sequentially clamped at a secondary loop head end according to wire clip labels, slave machine ends are sequentially clamped at a secondary loop tail end according to the wire clip labels, and whether wire alignment is correct or not is judged and determined according to on and off of a sending lamp and a receiving lamp.