Animal ear tag based on RFID tag

The utility model relates to the technical field of tag application, in particular to an animal ear tag based on an RFID tag, which comprises a male tag and a female tag. A bolt is connected to the middle of the bottom surface of the male tag, a first coupled antenna is further packaged on the bottom surface of the male tag, and the wiring end of the first coupled antenna is attached to the outer surface of the bolt; a jack is formed in the middle of the female tag, a second coupled antenna and an RFID chip are further packaged on the top surface of the female tag, one wiring end of the second coupled antenna is electrically connected with the RFID chip, and the other wiring end of the second coupled antenna is arranged along the inner wall of the jack; and when the male tag is inserted into the jack of the female tag through the bolt, the wiring end of the second coupled antenna in the jack is conducted with the wiring end of the first coupled antenna attached to the surface of the bolt. According to the ani