Tobramycin, available in both eye drops and eye ointment, as well as tobramycin dexamethasone eye drops and eye ointment, is mainly used for conjunctivitis caused by bacterial infections of the eye, and is generally not allowed to be dropped in the ear. Tobramycin belongs to the aminoglycoside antibiotic class of drugs, with antibacterial and anti-inflammatory effects. It is mainly used for the treatment of purulent conjunctivitis, infectious conjunctivitis, pyelonephritis, cystitis, etc. It is mainly used for the treatment of localized infections of the external eye and accessory organs caused by sensitive bacteria, and belongs to the ophthalmic agents, and it is not mentioned that it can be used for dropping in the ear in the indications, and it is generally not allowed to be used in the ear. Improper use of tobramycin may result in adverse reactions such as hearing loss, tinnitus, sensation of fullness in the ear, unsteady gait, and vertigo, with symptoms subsiding after discontinuation of the drug. Vestibular function or hearing loss should be used in accordance with medical advice, allergic to this product or other aminoglycosides patients are prohibited. It is recommended that patients follow the doctor’s instructions for the use of medication, do not self-medication in order to avoid the danger.