The general location of the human stomach is in the upper left quadrant of the abdominal cavity. The general location of the human stomach is in the left upper part of the abdominal cavity in the left quarter rib area, with slight variations in different body types. The inlet of the upper part of the stomach is called the cardia, which is connected to the lower part of the esophagus and is about level to the left side of the eleventh thoracic vertebra. The outlet of the lower part of the stomach is called the pylorus, and is connected with the upper part of the duodenum, about level with the right side of the first lumbar vertebra. The human stomach is below the heart, the left posterior side of the stomach is the spleen, the diaphragm, and the left costal arch, the posterior side of the stomach is the posterior side of the pancreas and the spleen, and the lower part of the stomach is the transverse colon and the kidneys. When the stomach is full of food, more full, under the action of gravity the stomach will be lower than when fasting, and the volume will be larger, but with the digestion of food and discharged into the intestines, the stomach will gradually return to its original position.