Echoes in one ear are mainly seen in the following clinical conditions: First, secretory otitis media. This may be secondary to rhinitis, colds, and other respiratory infections, and is mainly due to negative pressure in the tympanic chamber and fluid accumulation in the tympanic chamber caused by poor function of the eustachian tube, resulting in an echo in the hearing. The clinical application of antibiotics, oral mucus promoter and other symptomatic treatment, the symptoms should be relieved. Second, neurogenic tinnitus. This kind of tinnitus may be caused by insufficient blood supply to the inner ear, poor microcirculation in the inner ear and other factors, and may be accompanied by hearing loss clinically. In this case, when the patient listens to the sound, there may be an echo mainly caused by tinnitus. Thirdly, some patients have foreign bodies in the ear canal, such as most of the cerumen blocked in the ear canal or flying insects in the ear canal, in this case there may be an echo in listening to the sound. All in all, if patients have echoes in their ears, it is recommended that they go to the ENT department to complete electronic tympanic membrane examination, pure tone hearing threshold and acoustic conduction resistance, and if necessary, CT middle ear examination to confirm the diagnosis.