Eustachian tube obstruction is caused by inflammation in the nasopharynx, and how long it takes for the eustachian tube to open on its own depends on the patient’s specific condition and cannot be generalized. When the eustachian tube is blocked, the cartilaginous segment of the eustachian tube is anatomically normal, but its function is impaired, and the pharyngeal opening of the eustachian tube is passive, but not active. Patients may experience ear congestion and blockage, and in severe cases, they may experience hearing loss and excessive self-hearing. If the patient’s condition is mild, such as obstruction of the eustachian tube caused by a cold, it can gradually clear on its own after recovering from the cold. However, the specific recovery time varies, and some patients can clear on their own after 2 weeks. If the patient’s condition is more serious and causes secretory otitis media, it is not usually possible on its own and requires specialist treatment. In addition, patients can also relieve the discomfort by puffing and massaging the ear screen. It is recommended to avoid spicy and irritating food, quit smoking and drinking, prevent colds and keep the nasal passages clear.