Stomach is always flatulence what reason is caused

There are several reasons for flatulence: First, it may be eating more milk, carbonated drinks, soy milk and other foods that produce more gas. Second, chronic gastritis, gastric ulcer, gastroptosis, gastrointestinal tumors, etc., can weaken the emptying function of the stomach, food pressure on the stomach wall, while food fermentation in the stomach produces a lot of gas, so that the pressure in the stomach is further increased, it will cause flatulence. Third, there may be functional dyspepsia.