The cattle were made to stand in Baoding, and 2% procaine 10 ml was injected under the eyes for nerve anesthesia, and then 0.25% procaine penicillin injection was used for local anesthesia. Clean and disinfect the upper and lower nasal mirrors, and cut a male tenon and a female tenon in the middle of the upper and lower nasal mirrors, so that they are just embedded with each other. Then use two needles to bury the thread, three needles to suture the nodule, apply iodine tincture locally, and then suture the wound to keep the surgical site clean. About 8 days, in addition to drinking water and eating grass, the cage mouth was put on, and finally the stitches were removed.