The main symptoms of chronic gastritis are upper abdominal pain and indigestion symptoms. Various symptoms are obvious or intense during the active period, and the symptoms are milder during the remission period, as shown in the following aspects. 1, abdominal distension and fullness. Active period of fullness, with a sense of blockage; remission period only after a full meal discomfort. 2, belching. Frequent episodes during the active period, with loud sound; met only after eating during the remission period, with a low voice. 3, epigastric pain. Severe pain and colic are seen in the active period; in remission, it is not obvious, but only vague pain or distension. 4, blood in the stool, positive fecal occult blood test in the active period; negative fecal occult blood test in the remission period. 5.Noisy. Obvious in the active period; rarely in the remission period. 6.Nausea and vomiting. Frequent during the active period; only occasionally during the remission period. 7.In terms of appetite, it is reduced or completely absent during the active period; it is still possible during the remission period, or slightly worse than usual.