There are many reasons why the stomach is always nauseous, it may be due to chronic gastritis, the usual diet should pay more attention, you can eat millet porridge, pumpkin porridge, but also may be caused by gastric ulcer. Nausea is a common clinical symptom, digestive system diseases such as gastritis, gastric ulcer, reflux gastritis, pyloric obstruction, intestinal obstruction, pancreatitis and other diseases can cause nausea, liver and biliary diseases such as chronic hepatitis, cirrhosis, gallbladder stones, cholecystitis, etc., can also be accompanied by nausea, central nervous system diseases such as encephalitis, meningitis, hypertension, cerebral hemorrhage, etc., can also appear nausea. Nausea can also appear in food poisoning, glaucoma, chronic pharyngitis, motion sickness, alcoholism, etc. If you are pregnant, consider whether the pregnancy reaction occurs during pregnancy, so there are many reasons why the stomach is always guilty of nausea.