The invention relates to a lead-out head positioning device for a lead. The lead-out head positioning device comprises a supporting plate, a positioning range pole and a fixing device. The lead-out head positioning device is simple in structure and convenient to use; the positioning process of a lead-out head of the lead is simplified, and time and labor are saved. The lead-out head of the lead is adjusted to a right position through the lead-out head positioning device for the lead, then operation of the next procedure is performed, and the assembly precision and the assembly quality of the lead are improved.