Wanting to have a bowel movement after eating may be a normal phenomenon, colitis, irritable bowel syndrome and so on. 1. Normal phenomenon: everyone’s defecation habits are different, some may be after waking up in the morning, some may be after eating a meal, once a day, not accompanied by other abnormal symptoms, and perennial presence of this symptom, this situation is considered a normal physiological phenomenon. 2. Colitis: Inflammation of the colon caused by various reasons can be accompanied by intestinal flora imbalance, abnormal intestinal function, etc. Frequent defecation can occur in this case, which can be accompanied by abdominal pain, emaciation and other symptoms. 3. Irritable bowel syndrome: this is a functional gastrointestinal diseases, abdominal pain, change in bowel habits, such as intermittent diarrhea, especially in the postprandial diarrhea more patients. Eat a meal and want to stool to pay attention to, for the accompanying symptoms of disease, should go to the hospital in a timely manner, and according to the specific circumstances of the treatment.