Sodium bicarbonate for ear mostly refers to sodium bicarbonate ear drops, the main ingredient of which is 3% sodium bicarbonate, which serves to alkalize the environment of the ear canal and is mostly used to soften cerumen. However, not every otitis externa requires the use of sodium bicarbonate, the specific use of medication is recommended to consult a regular doctor do not blindly use drugs. Fungal otitis externa patients, mainly need to use antifungal drugs for treatment, such as miconazole nitrate. If the symptoms are more serious, you also need to cooperate with the systemic use of antifungal drugs, such as itraconazole to carry out treatment. The fungal dander and secretions in the ear canal and necrotic material should be removed before using the drug, so that the surface of the ear canal and tympanic membrane is fully exposed, which is conducive to the absorption of antifungal drugs. If necessary, the use of antifungal drugs containing glucocorticoids, such as tretinoin econazole cream, can play a comprehensive therapeutic role.