Too hard stools are considered to be caused by improper diet, intestinal dysfunction, intestinal flora disorders, and too little exercise: 1. If the patient usually does not have a balanced diet structure, eats too much high-protein meat, consumes less fresh vegetables and fruits, and lacks coarse fiber in the stool, it will lead to difficult discharge of stool, forming constipation over time. Usually eat too much spicy, fried food, will also easily lead to fire, causing dry, dry stool. 2, patients with intestinal dysfunction, strong digestive and absorption functions will continue to decline, peristalsis is too slow, stool accumulation in the intestine for a long time, water is absorbed too much, resulting in too hard stool, defecation difficulties. 3, patients with intestinal flora disorders due to excessive multiplication of harmful bacteria, resulting in stool stool is too hard, defecation difficulties. 4, patients who usually do not eat too much spicy, fried food, will lead to constipation. 4, usually do not like to exercise, sitting or lying down after meals, resulting in slow intestinal peristalsis, stool in the intestinal water is absorbed resulting in dry stool.