Left ear and right ear hearing is different, if you just found this symptom need to be promptly checked. The main reasons are as follows: 1. It is otitis media, if you have recently had cold or cough symptoms, and suddenly the hearing in both ears is different, and hearing loss in one ear is considered otitis media, mostly secretory otitis media, and purulent otitis media in adults is less common. 2. Sudden deafness, because this disease also has a single ear onset. If you have recently had a bad rest, tiredness, anxiety and anger, and suddenly the hearing in both ears is different, you need to be examined in time to rule out the possibility of sudden deafness, and the sooner you treat it, the better the effect. 3, there is a foreign body blocking the external ear canal, such as excessive cerumen or other secretions blocking the external ear canal, causing the hearing in both ears to be different, and the secretions can be cleaned up in time.