Drinking a lot of water or dry stools may be caused by poor living habits, diabetes, intestinal tumors and other factors. 1. Poor living habits: If you are sedentary or often hold your bowels, it may cause the intestinal contents to stay in the intestinal tract for too long, so that water is reabsorbed in large quantities, and then you will have the situation of drinking a lot of water or having dry stools. 2. Diabetes: diabetes, due to elevated blood glucose in the body, under the influence of osmotic pressure, the situation of drinking and urinating. At this time, even if you drink a lot of water, the water may be discharged from the urine, and you may drink a lot of water or dry stools. 3. Intestinal tumor: when there are tumor cells growing in the intestines, it may lead to narrowing of the intestinal lumen, blocking the passage of intestinal contents, thus making the intestinal wall increase the absorption of water in the stool, which in turn may cause the situation of drinking a lot of water or having dry stools. When the situation of drinking a lot of water or dry stools, you should consult a doctor in a timely manner, under the guidance of the doctor to improve the fecal routine, colonoscopy and other related examinations, to clarify the cause of the disease, and active treatment.