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, forming a coil groove on the side surface of the framework; 3, winding a coil in the coil groove, and electrically connecting the coil with a chip of the main label; 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, because of the process arrangement, the winding groove is arranged on the side surface of the framework so that the coil can be directly wound on the framework, the two steps of producing the coil and fixing the coil on the framework are integrated into one step, the time of assembling and disassembling the coil from the framework and the time for total integration are saved, the working steps are eliminated, the production process is simplified, and the production efficiency is improved. The invention also discloses the main label of the ear tag obtained from the processing method and the ear tag.