Dyspepsia after a short while after eating may be caused by indigestion, gastritis, enteritis and other reasons. It can be treated with drugs such as domperidone, omeprazole capsules and montelukast on the advice of a doctor. 1. Indigestion: Indigestion caused by poor diet or cold may cause diarrhea after eating for a while. Patients can use gastrointestinal stimulants, such as domperidone, under the advice of a doctor. 2. Gastritis: Dyspepsia after eating can also be caused by gastritis, accompanied by nausea and vomiting and other symptoms, dyspepsia can also lead to dehydration when severe. Patients can be treated with acid-suppressing drugs, such as omeprazole capsules, under the advice of a doctor. 3. Enteritis: due to the decline in digestive function, food in the stomach and intestines can not be fully absorbed, coupled with the stimulation of intestinal mucus, increased secretion will be diarrhea. Patients can use drugs such as montelukast for treatment under the advice of doctors. If often appear after eating a meal a while on the diarrhea should go to the regular hospital gastroenterology examination, identify the cause of the disease, symptomatic treatment, the use of drugs need to be carried out under the advice of a doctor, not to self-medication.