Urotica has not been found to cause constipation as an adverse reaction for the time being. Constipation may be caused by poor dietary habits, mental factors, digestive system diseases and so on. It is recommended that patients go to the hospital in a timely manner to clarify the cause of the disease. 1. Poor dietary habits: low diet, low-calorie diet, low vegetable fiber diet, irregular eating, skipping breakfast, low fluid intake, etc. are likely to cause constipation. It is recommended that patients drink more water, eat more fresh vegetables and fruits, and develop a good habit of regular defecation. 2. Mental factors: work pressure, mental tension, psychological pressure of the crowd prone to constipation, many functional constipation patients have depression, anxiety and other psychological disorders. You need to maintain a happy, unimpeded mood. 3. Digestive system diseases: such as hemorrhoids, anal fissure, perianal abscesses and ulcers, proctitis, colon tumors, intestinal obstruction and other diseases, may cause the symptoms of constipation. Oral lactulose, sorbitol and other drugs can be taken to relieve symptoms. Uroxatral has not been found to cause constipation adverse reactions for the time being, constipation may be due to other reasons, patients should go to the hospital in time.