There are many laxative fruit and vegetable juices, such as dragon fruit juice, apple juice, tomato juice, carrot juice and so on. 1. dragon fruit juice: dragon fruit contains high crude fiber, per 100 grams of dragon fruit contains 1.8 grams of crude fiber. 2. Apple juice: apples are also rich in crude fiber, every 100 grams of apples have 1.2 grams of crude fiber. 3. Tomato juice: tomatoes contain pectin, per 100 grams of tomatoes contain 1.2 grams of crude fiber. 4. carrot juice: per 100 grams of carrots contain 1.1 grams of crude fiber, and nutritious. Functional constipation can drink more fruit and vegetable juice can stimulate intestinal peristalsis, but also to replenish water, moisturize the intestinal tract to play the role of laxative. Fruit and vegetable juice can not replace the drug, serious constipation, but also need to consult a doctor, follow the doctor’s instructions for treatment.