Indiscriminate use of ear drops may lead to hearing loss, fungal otitis externa, etc., so pay attention to the correct use of ear drops. 1. Hearing loss: for example, the treatment of acute otitis media, generally use 1% phenol glycerol ear drops, but only in the acute stage of the tympanic membrane is not perforated under the premise of anti-inflammatory and pain relief; if the use of messy use of ear drops, too long, too many times, may cause thickening of the eardrum, causing hearing loss. 2. Fungal otitis externa: If antibiotic ear drops are used indiscriminately, they may cause the flora in the ear canal to become dysfunctional, causing fungal otitis externa, which is not easy to cure at this time. Ear drops should not be used indiscriminately, nor should they be used for too long or too many times, and should be treated under the guidance of a doctor according to the specific condition.