Cat otitis media only requires external medication and external deworming, and does not require internal medication. Effective drugs include ivermectin, selamectin, imidacloprid, moxidectin, etc. The external anthelmintics currently on the market contain some of the above ingredients and can be used directly for treatment. In addition, ear medicines that are specifically designed to treat otitis media, such as Erfuling, can also be used. However, it is recommended that no matter what medicine is used, pet owners should clean the ear canal before applying the medicine, so as to reduce the number of pathogens.