Eating less but having more stools may be a normal phenomenon, or there may be pathological reasons, such as irritable bowel syndrome, intestinal inflammation, intestinal tumors, etc., which need further examination. 1. Normal phenomenon: If it occurs occasionally without other accompanying symptoms, there is no need to worry too much. It may be due to the lack of timely defecation before, thus with the newly produced stool discharge, appear stool volume. In this case, you should pay attention to drink more water, appropriate exercise, promote intestinal peristalsis, timely defecation, to avoid the accumulation of stool in the intestinal tract. 2. Pathological causes: if accompanied by changes in the color and shape of stools, which are different from the usual, or even weight loss, obvious emaciation. In this case, you should be more vigilant and go to the gastroenterology department as soon as possible. You should complete the colonoscopy examination to exclude intestinal pathology in time, and use medication or surgical treatment under the guidance of the doctor. Changes in the stool may indicate the existence of hidden diseases in the body, pay attention to the changes in the stool, can help us find potential diseases in a timely manner, so as to achieve early detection and early treatment.