Stomach bloating a little pain, the more common reasons are the following: 1, dietary reasons, mainly eat badly digested, greasy food, in addition to stomach pain, there may be nausea, acid reflux and other symptoms. 2, gastric neurosis, mainly related to emotions, more common in women, in addition to stomach and epigastric distension, there will be irritability, insomnia and other symptoms. 3, a variety of gastric diseases leading to functional dyspepsia, also These symptoms can occur, such as inflammatory erosions, ulcers, and polyps of the stomach. In addition, simple H. pylori infection may also cause digestive symptoms, such as gastric distension, bad taste in the mouth, dry mouth, and bitter mouth.