The reason for the patient to have thin stools may be physiological factors and pathological factors, if physiological is normal, if pathological, the patient should be treated under the guidance of the physician. Physiological factors may be due to the stage of dietary habits change, due to the relatively low intake of fiber food, intake of too much protein and high fat content of food, which is the cause of stool thinning. Patients are advised to adjust their dietary habits, reduce the intake of fat and calories, consume more foods rich in fiber and water, and maintain a healthy nutritional diet. Pathological factors may be may be rectal stenosis, resulting in a very narrow intestinal bowel, easy to intestinal swelling, intestinal adhesions, thus causing a series of complications, this condition should be timely to the hospital’s gastroenterology department to carry out targeted examination, effective solution to the disease. Life should pay attention to diet, intake of adequate water and fiber, do not excessive intake of sugar and high fat food, more exercise, enhance their physical fitness.