The utility model relates to automobile accessories technical field especially relates to plug for cigarette lighter with the adaptation is pegged graft in the vehicle -mounted cigarette lighter interface and is realized power transfer's main part, and the grafting end of this main part is equipped with the slide to reach and be equipped with firing mechanism in the main part, the slide touches the firing mechanism action, causes hitting of firing mechanism to beat the piece and jets out the main part and accomplish and hitting the work of doing manual work. The main part is cup jointed to the slide axial, the main part is supporting be equipped with in the shaft hole supply the slide to embolia the equipment, there is a floating spring top rear end of slide, the front end of slide exposes the main part, the location is extended at the front end of slide in anodal contact in the main part, the slide is equipped with a through -hole that supplies hitting of firing mechanism to beat the piece and jet out, the slide contracts toward the main part in and then touches firing mechanism and move. The utility model discloses satisfy the power transfer requirement, be equipped with firing mechanism simultaneously in the main part, realize automatic percussion, have the safe function of hammering into shape to effectively saving oneself during emergency, fleing for one's life, convenient to use is swift, is suitable for various crowds and uses, promotes the practicality.