Sweet potatoes are rich in dietary fiber, vitamins and minerals, and generally do not cause constipation. The dietary fiber can also promote gastrointestinal peristalsis and improve the symptoms of constipation. Eating too much sweet potato may cause bloating and nausea, which may be mistaken for constipation. Sweet potatoes should not be consumed by patients with gastric ulcers and diabetes because they can lead to increased gastric acid secretion and elevated blood sugar. Constipation can be divided into functional constipation and organic constipation. Functional constipation: with the diet structure is unreasonable, less water, less exercise, emotional depression, irregular bowel movement, etc.. Organic constipation: non-specific enteritis (ulcerative colitis, Crohn’s disease), intestinal masses, intestinal obstruction, intussusception and other diseases are related. If you have constipation symptoms, it is recommended to consult a doctor to clarify the cause of constipation.