The invention discloses a processing method of a main label of an ear tag, which at least comprises the steps of: 1, obtaining a framework of the main label; 2, arranging a coil and a chip on the framework; 3, electrically connecting the coil with the chip through a bonding process; and 4, sealing the part of an intermediate product obtained in the step 3, including the coil and the chip, and obtaining the main label. In the processing method disclosed by the invention, the common enamelled wire is welded with a copper sheet of a chip pin together by a bonding machine in a bonding manner, thus the processing method has the beneficial effects of low production cost, high accuracy, high reliability of welding points, and the like. The invention also discloses the main label of the ear tag obtained from the processing method and the ear tag.