Microwave medicine is an emerging fringe science. Together with electronic gastroscopy, it is used for the treatment of intracorporeal diseases in human body is a new technology actively promoted by scholars at home and abroad. It simplifies the traditional operation and breaks the exclusion zone of certain procedures. Microwave endoscopic surgery can: treat peptic ulcers, bleeding, polyps, early cancer, and stenosis obstruction. It can completely replace high-frequency electricity, laser and drug injection therapy. And microwave without smoke, no coking, clear field of view, easy to operate, less complications, and remarkable efficacy. Mechanism: Microwave is a kind of high frequency electromagnetic wave, mainly using its thermal effect, biological tissues by microwave radiation, that is, the absorption of microwave energy, resulting in the polar molecules in the area of the cell in an activated state, high-speed oscillation, and the neighboring molecules friction and microwave energy into heat, resulting in tissue coagulation, necrosis. Applications: 1. Gastrointestinal bleeding: bleeding caused by ulcers and erosions. 2. Mucosal augmentation lesions in the lumen of the stomach ① gastric polyps (inflammatory polyps, hyperplastic polyps,). ② benign tumors of the stomach (adenoma or polypoid adenoma derived from the mucosal epithelial tissue of the gastric wall) ③ gastric mucosal prolapse ④ hypertrophic pyloric stenosis. 3. Gastrointestinal stenosis: palliative treatment of anastomotic scar stenosis and cancerous stenosis.