The stool is grainy and dry, the causes of dry stool are the following two points: First, dietary factors, if you do not love to eat coarse food, diet is too fine, eat too much protein-rich and fatty foods, less crude fiber in the diet, the water in the food residue is more easily absorbed by the intestines, so that the stool lacks water and abnormally dry, resulting in defecation difficulties and poor bowel movement. For dietary reasons caused by dry stool, you need to promptly adjust the diet, eat more coarse fiber foods such as corn, sweet potatoes, fruits, vegetables, etc. Second, intestinal flora imbalance, gastrointestinal function is weak, will make the gastrointestinal peristalsis slow down, food digestion, malabsorption, food residues in the gastrointestinal stay too long, water is absorbed by the intestine too much, there will be a dry situation. For this situation, you can take probiotics, or stomach and appetite tablets to regulate.