Generally high triglycerides will not cause diarrhea after meals, diarrhea after meals may be caused by irritable bowel syndrome, acute gastritis, duodenal ulcer and other diseases. 1. Irritable bowel syndrome: the cause of this disease is not yet clear, and may be related to neurological abnormalities, intestinal infections, visceral hypersensitivity, intestinal microecological imbalance and other reasons. If the patient is intolerant to the food he/she eats, the disease may be triggered and symptoms such as diarrhea, abdominal pain and constipation may occur. 2. Acute gastritis: The disease is related to pathogenic microbial infections, chemical toxins, alcoholism, heavy metal poisoning, intestinal irritants and other causes. It can be induced by unclean diet, malnutrition and other factors, which can lead to diarrhea, abdominal pain, nausea, vomiting and other symptoms. 3. Duodenal ulcer: The causes of this disease include genetics, glucocorticoids, chemotherapeutic drugs, Helicobacter pylori infection, increased secretion of gastric acid and pepsin. It is often triggered by irregular eating, stress reaction, etc. Patients may have diarrhea, constipation, abdominal pain, acid reflux, heartburn and other symptoms. When patients with high triglycerides experience diarrhea after meals, it is recommended to go to the hospital for relevant examinations to clarify the cause.