In general, it is normal to have one to three bowel movements per day, which may vary according to individual circumstances. If your bowel movements are not normal, seek medical attention to identify the cause and treat the symptoms. Normal defecation means that when the feces fills the rectum, it stimulates the receptors in the intestinal wall and sends impulses to the low-level defecation center in the lumbosacral spinal cord, which is also uploaded to the cerebral cortex and produces the urge to defecate. The impulses from the cerebral cortex increase the excitement of the defecation center and produce a defecation reflex, which causes the sigmoid colon and rectum to contract and the anal sphincter to dilate, facilitating the expulsion of feces from the body. When the daily bowel movement more than 3 times, fecal discharge more than 200 grams / day, fecal thin texture, water content > 85%, is diarrhea, common in food poisoning, intestinal inflammation, intestinal tuberculosis, etc.. When the bowel movement is less than 3 times per week, the feces are dry and hard, and it is difficult to defecate, it is constipation, which is common in intestinal tumors, inflammatory bowel disease and so on. Whether it is diarrhea or constipation, it is important to seek medical attention in a timely manner.