First prepare a bottle of human otitis media solution, a pair of hemostatic forceps, a bag of absorbent medical cotton, and a bottle of ear powder. Then sprinkle some ear powder on the dog's outer and inner ears and pluck the inner ear hair in reverse. The head of the hemostatic forceps bites the medical absorbent cotton. To avoid scratching the ear canal, a single finger at the double ring should be rotated in one ring to completely wrap the absorbent cotton with the forceps head. Then use hemostatic forceps and absorbent cotton to partially clean the ear canal. If you encounter a place where the dog whines, it means that the affected area has not been completely cleaned yet. Clean other areas before proceeding to the next step. After cleaning the ears, put a few drops of human otitis media solution into both ear canals or apply it with absorbent cotton. Check once a day and it should usually be cured after a week. After recovery, spray ear powder into the inner ear, and use hemostatic forceps to pluck out the inner ear hair, because ear hair can easily carry bacteria.