Potato juice is not effective in treating constipation. Potato juice is also rich in potassium, and its proper intake is good for health. However, there is no dietary fiber in potato juice, so it does not have laxative effect. After entering the digestive system, it is quickly absorbed and has no effect on stimulating intestinal peristalsis, so it cannot improve the symptoms of constipation. Constipated patients who want to use dietary therapy to improve, should eat more vegetables rich in dietary fiber, such as celery, leek, these vegetables in the dietary fiber into the intestinal tract, will not be absorbed by the intestinal tract, but also stimulate intestinal peristalsis, so you can achieve the role of improving constipation. People with constipation should also massage their abdomen properly in order to promote intestinal peristalsis and help the elimination of feces. If necessary, laxative drugs can be used to increase the peristaltic function of the intestines to eliminate feces.