Patulous eustachian tube（PET） is an otolaryngological disorder caused by various factors, characterized by the loss of normal closure function of the eustachian tube in a resting state, resulting in persistent patency. Surgical treatment is recognized as an effective method for the management of refractory PET, but the surgical approaches for PET are diverse, with therapeutic outcomes varying significantly. The surgical procedure involving the occlusion of the tympanic ostium of the eustachian tube through the tympanic membrane, using specially designed silicone plugs, has shown excellent therapeutic outcomes. This minimally invasive procedure is considered highly safe and is considered as the preferred surgical option for patients with refractory PET. The purpose of this article is to review the current status and progress of endoscopic trans-tympanic eustachian tube plug implantation surgery in the treatment of patulous eustachian tube syndrome.