There is a bag in the middle of the stomach may be due to undigested food, walk after meals or abdominal massage to promote food digestion and absorption can be; may be pyloric obstruction, it is recommended to do a gastroscopy and surgical resection; may also be a tumor of the stomach, to determine the nature of the mass, gastric tumor resection treatment. 1. Abdominal massage: if overeating, eating a lot of food in a short time, stomach contents are not emptied in time, accumulation in the stomach may appear in the middle of the stomach to have a round bag of phenomenon, generally a normal phenomenon, without special treatment, it is recommended to take a walk after meals, or clockwise abdominal massage, to promote the digestion and absorption of food. 2. Gastrointestinal decompression: related to perforation, ulcer or local inflammation, can lead to local tissue adhesion causing obstruction, gastric gas or food and digestive juices can not be discharged into the intestine, resulting in significant expansion of the stomach, the phenomenon of the stomach in the middle of the press to the round bag, it is recommended to carry out gastrointestinal decompression, and fasting, fasting, to alleviate the situation of rapid expansion of the stomach, and at the same time improve the examination of the gastroscope, surgical excision of the diseased tissue. 3. Surgical resection: if there is tumor in the upper abdomen, the tumor will present a huge mass in the stomach after enlargement, especially for the people with thin physique, the phenomenon of a bag in the middle of the stomach can appear, it is recommended to improve gastroscopic examination to clarify the nature of the lesion, meanwhile improve the abdominal enhancement CT, and perform surgery for radical resection in the early stage, and also treat it through radiotherapy and chemotherapy after operation. When there is a mass in the stomach that does not subside by exercise or massage, it is necessary to go to the hospital in a timely manner, with the help of the doctor to make a clear diagnosis, so as not to delay the condition.