There is a meal but less pulling may be caused by physiological reasons, such as slow metabolism, digestion and absorption, or pathological reasons, such as constipation, intestinal tumors and so on. 1. Physiological reasons: (1) Slow metabolism: after eating, people with slow metabolism need a longer time for digestion and absorption. If there is a meal, the amount to be digested and absorbed is more, and its time will be longer, and there will be a situation of having a meal but having less diarrhea. (2) Strong digestion and absorption: If digestion and absorption are strong and there is little leftover food, then there will be a situation where there is a meal but less pooping. 2. Pathologic causes: (1) Constipation: there is a meal quantity, but the food residue remains in the intestinal tract for too long, and its water is over-absorbed, resulting in excessive loss of water in the process of stool formation, and there is a situation of having a meal quantity but having less pulling. (2) Intestinal tumor: If the digested food has a meal quantity, but the downward pushing of the food is hindered by the occupying tumor in the intestine, then there will be a situation of having a meal quantity but having a small amount of diarrhea. There may be other reasons why you have a small amount of food, so it is recommended that you go to the hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.