If you don’t have a bowel movement for a week, it may be caused by physiological constipation or pathological constipation. 1. Physiological constipation: generally due to mental stress, bad eating habits, do not pay attention to exercise, drink too little water and other bad habits caused by gastrointestinal peristalsis slowed down resulting in constipation, appeared a week without stool and no bowel movement. 2. Pathological constipation: pathological constipation can be divided into organic constipation and functional constipation. (1) Functional constipation: such as depression, anxiety, anorexia, hypothyroidism, diabetes mellitus, vitamin B1 deficiency, long-term use of laxatives, anesthetics, calcium channel blockers, antidepressants, etc., can lead to functional constipation, manifested as a week of no bowel movement and no bowel movement. (2) Organic constipation: such as congenital megacolon, inflammatory bowel disease, late trauma and intestinal stenosis after intestinal anastomosis, intestinal stenosis caused by intestinal tumors; endometriosis, prostate cancer compression or erosion of the intestinal tract, etc., can cause constipation, which can be manifested as a week without bowel movement and no bowel movement. When you do not have bowel movement for a week, it is recommended that you should seek medical advice in time and under the guidance of your doctor.