The stomach is bloated and a little foam is considered to be indigestion or bacterial infection, you can test the fecal routine and other tests to make it clear. 1. indigestion: if the examination of the stool has fat particles that is caused by indigestion, you can take gastrointestinal tablets or lactobacillus tablets, etc. to regulate, while eating a diet of easy to digest, soft and food, eating cold, hard, spicy stimulating food. 2. Bacterial infection: If the routine examination of stool suggests that the white blood cells are abnormally high, it is considered to be a bacterial infection that needs to be treated with antibacterial drugs, such as berberine hydrochloride tablets, norfloxacin capsules and other treatments. In this case, it is recommended to go to the regular hospital in a timely manner, pay attention to abdominal warmth after meals, appropriate exercise, under the guidance of the doctor to choose the appropriate medication for treatment, do not self-medication in order to avoid causing adverse effects.