The invention provides a tire wire automatic welding machine for manufacturing high-performance steel shots. The tire wire automatic welding machine is composed of a rack, a roller motor, a conveying belt, extrusion rollers, a distributor, a distribution brush, an initial positioning mechanism, a chain material plate, a position sensor, a contact mechanism and a control system. A tire wire is arranged on the conveying belt through an electromagnetic absorber, the tire wire is stretched and straightened on the conveying belt through the extrusion rollers and enters the distributor, and even distribution is conducted through the electromagnetic absorber. Multiple grooves are formed in the chain material plate, and multiple wheels are arranged in the grooves. The tire wire enters the grooves and is arranged on the wheels, through re-positioning of the initial positioning mechanism and the position sensor and along with the continuous movement of the tire wire, when the tire wire makes contact with the contact mechanism, butt welding is achieved, along with the continuous movement of the tire wire fater the tire wire is heated, groove openings are perpendicularly downward, the tire wire disengages from the grooves, and automatic feeding, automatic distribution, automatic positioning, welding, and automatic blanking are achieved.