There is no special diet that guarantees a smooth bowel movement. If the bowel movement is not smooth, it can be improved through medication and dietary regimen. 1. Medication: Poor bowel movement may be caused by slow gastrointestinal peristalsis, intestinal diseases and other causes of constipation. You can follow the doctor’s instructions to take domperidone, mosapride and other drugs to promote gastrointestinal peristalsis, you can also follow the doctor’s instructions to take lactulose and other osmotic laxatives. But the above medication may lead to allergies, diarrhea and other side effects. 2. Dietary life regulation: diet can eat more spinach, leeks, celery, dragon fruit, pears and other fiber-rich fruits and vegetables; appropriate exercise can also promote gastrointestinal motility. Through the above life dietary modification, generally can assist in laxative, so that the bowel movement is smooth. If the phenomenon of bowel movement is not smooth, avoid self-medication. It is recommended to go to the hospital for further examination of colonoscopy and other programs to find the cause, under the guidance of the doctor treatment.