Malignant obstruction caused by tumor infiltration and compression of the stomach and nearby organs of the duodenum often causes persistent nausea, vomiting, and obstruction of feeding, which seriously affects the quality and time of survival of patients. Due to the advanced stage of tumor, these patients often lose the opportunity of surgery, and it is also difficult to perform chemotherapy due to their weakness, and the traditional palliative gastric and jejunostomy and abdominal wall fistula are very risky. The use of endoprosthesis can quickly and effectively open the feeding channel without changing the patient’s usual eating habits and improve the patient’s quality of life. Advantages: safe operation, few complications, restoration of feeding function. Some patients have been given the opportunity to undergo further chemotherapy with pulse infusion due to their recovery, which prolongs their survival. Clinical application Patients with luminal stenosis or occlusion caused by tumor infiltration and compression of organs near the stomach and duodenum, which cannot be surgically removed from the original disease; patients with recurrence of tumor in the gastrointestinal anastomosis after surgical operation, producing restenosis. Patients with anastomotic scar obstruction after surgery for benign gastric and duodenal lesions.