It is not normal to have a bowel movement once a week. It is normal for the human body to have a bowel movement once a day, once every 2 days, or twice a day. But if more than 3 days 1 stool, and there is dry stool, water reduction or abdominal flatulence, pain and other performance, mainly considered constipation caused. There are many causes of constipation. Eating dry and hard food frequently, less water intake, and eating fresh vegetables and fruits can lead to slowing down the peristaltic function of the gastrointestinal tract. In addition, constipation and long hours of sitting work, often do not exercise, diet is too fine and other factors also have a certain relationship. So when there is dry and hard stools need to be appropriate exercise, such as daily brisk walking, jogging, can promote the peristaltic movement of the gastrointestinal tract, and should eat more fresh vegetables, fruits and coarse grains, as well as coarse fiber food, conducive to intestinal activities. Through the above methods can not alleviate the symptoms, can be regulated by drugs, common are marenzine intestinal pills, lactobacillus tablets, fruit guide tablets, if necessary, can be treated with open cork.