The bulge felt in the stomach may be related to intestinal obstruction, abdominal tumor, peri-appendiceal abscess, inguinal hernia and other causes, which need to be further differential diagnosis by the doctor. 1. Intestinal obstruction: because the contents of the intestinal canal can not be normally discharged from the body, can be in the intestinal tract of the local accumulation, so can be touched in the abdominal bulge. 2. Abdominal tumors: such as malignant tumors of the peritoneum, with the gradual increase of the tumor, the bulge may also be felt in the stomach. 3. Peri-appendiceal abscess: acute appendicitis symptoms gradually aggravate the formation of peri-appendiceal abscess, can be felt in the stomach bulge. 4. Inguinal hernia: due to the congenital weakness of the abdominal wall in the groin, defects, or due to the age of the abdominal wall thinning and other reasons, can lead to the abdominal organs from the defects or weaknesses to the surface of the body protruding, can feel the bulge in the stomach. It is recommended that the person who feels a bulge in the stomach should consult a doctor in time to clarify the cause of the disease and carry out standardized treatment under the guidance of the doctor, so as to avoid delaying the condition and bringing adverse effects to the body.