In general, the stomach is located mainly below the xiphoid process, about three transverse fingers above the navel. The stomach is located in the left upper abdomen and is close to the left side. The upper part of the stomach is connected to the esophagus and the lower part is connected to the duodenum, and the main course of the stomach is from the upper left to the lower right side, adjacent to the pancreas, liver and gallbladder. The stomach is the body’s digestive organs, can play the role of storage, grinding, mixing, and to the small intestine into the role of food. It also secretes gastric acid and various digestive enzymes to digest food; it also produces endogenous factors that promote the maturation of red blood cells, the lack of which is prone to anemia. In addition, if there is an upset stomach, it is recommended that patients go to the hospital in a timely manner, and follow the doctor’s instructions for treatment, to avoid delaying the condition.