[en] Objective: To design the mushroom covered stent and study the primary application for gastroesophageal anastomosis-thoracic cavity fistula. Methods: On the base of the peculiar anatomic structure and the pathological changes of gastroesophageal anastomosis-thoracic cavity fistula, authors designed the mushroom covered stent. Under the fluoroscopic guidance, 6 mushroom covered stents were placed in 5 patients. Results: The fistula oral of the patients with post-operative perforation were closed with the mushroom covered stent, the food intake ability and nurturer of all patients were improved. Conclusions: The structure of the mushroom covered stents is reasonable, which is effective and safe for treating the patient with gastroesophageal anastomosis-thoracic cavity fistula