There are many reasons why you want to have a bowel movement after every meal, the common ones are colitis, irritable bowel syndrome, gastrointestinal dysfunction and so on. 1. Colitis: Inflammation of the colon, after eating, can make gastrointestinal peristalsis accelerate, stimulate the intestinal mucosa, produce stool sensation, manifested as the above symptoms. 2. Irritable bowel syndrome: Because of the high sensitivity of the intestines, there are often symptoms such as abdominal pain and abnormal bowel movements. Food stimulation of the intestinal tract can cause gastrointestinal peristalsis to accelerate, resulting in the urge to have a bowel movement after every meal. 3. Gastrointestinal dysfunction: functional gastrointestinal disease caused by a variety of factors, manifested by postprandial fullness, abdominal pain, diarrhea, etc., stools are usually 3 to 5 times a day, mostly in the morning or after meals. There may be other reasons why you want to have a bowel movement after every meal. If you feel unwell, it is recommended that you seek medical advice as soon as possible to clarify the cause of the illness and standardize the treatment under the guidance of a professional physician.