The hardness under the stomach may be caused by eating soy products and other gastric distension, or it may be caused by other pathological reasons such as stomach stones, gastritis, leather stomach, hepatomegaly and so on. 1. Physiological: if you eat too much soy products, onions and other easily flatulence food, causing gastric distension, you will feel hard under the stomach, this is a physiological phenomenon, avoid these foods, eat more easily digested food will be relieved. 2. Pathological: may be eating hawthorn, persimmons and other foods, resulting in stones in the stomach, feel hard under the stomach. It may also be that gastritis, gastric ulcer and other diseases lead to decreased digestion and absorption ability of the stomach, which may easily cause flatulence after eating, so it feels hard and hard. Leather stomach is a kind of gastric cancer, cancer cell infiltration makes gastric mucous membrane folds disappear, gastric wall thickening and stiffness, so it will feel hard to touch. In addition, enlargement of liver due to bile excretion disorder and enlargement of spleen due to cirrhosis and virus will also cause hardness under the stomach. Hardness under the stomach may also be other reasons, we should consult a doctor in a timely manner, under the guidance of the doctor to do gastroscopy, abdominal CT and other tests, to clarify the cause of the disease, follow the doctor’s advice and timely treatment, so as not to delay the best treatment period.