Eustachian tube balloon dilation is a minimally invasive procedure that is usually performed on patients with Eustachian tube dysfunction. For patients with Eustachian tube dysfunction, Eustachian tube balloon dilatation is an option to improve the function of the Eustachian tube, thereby relieving the negative pressure in the middle ear cavity, and facilitating the ventilation and drainage of the middle ear cavity. Eustachian tube balloon dilatation is a minimally invasive procedure to improve the ventilation and drainage of the Eustachian tube through balloon dilatation under the guidance of nasal endoscopy; the cartilage of the Eustachian tube is reconstructed through the surgery to better regulate the pressure inside the tympanic cavity; the surgery will not cause damage to the eardrum and the pain of the surgery is not obvious. Balloon dilatation of the Eustachian tube needs to be operated by a professional doctor, and it is recommended that patients who need it must choose a regular hospital to ensure the success rate of the surgery and avoid postoperative risks.