Bloating in the afternoon may be a complication of functional dyspepsia, or gastroenteritis, gastric ulcer and other diseases. 1. Functional dyspepsia: usually associated with poor dietary habits, bad habits, such as long-term eating greasy, flatulence, indigestible food, may cause gastrointestinal tract accumulation of food, resulting in bloating in the afternoon. 2. Gastroenteritis: pathological indigestion may occur after suffering from this disease, which is easy to affect the peristalsis of gastrointestinal tract. If the food keeps piling up in the intestinal tract without peristalsis, symptoms such as bloating and constipation will occur. 3. Gastric ulcer: usually associated with the infection of Helicobacter pylori, when the pathogenic bacteria repeatedly stimulate the gastric mucosa leading to an increase in gastric acid, affecting the gastrointestinal digestive function, prone to gastrointestinal accumulation of food, gastric bloating, not easy to digest and so on. As soon as the afternoon on the stomach bloating, you can first massage the abdomen or increase the appropriate amount of activity, if the symptoms can not be relieved and then timely consultation, through the relevant examination to rule out pathological factors.