Fruit juices for laxative include banana juice, dragon fruit juice, watermelon juice and so on. 1. Banana juice: bananas are rich in dietary fiber, which can promote intestinal peristalsis, and bananas are also rich in water-soluble fiber with more than 15% sugar, which can soften feces to achieve laxative effect. 2. dragon fruit juice: dragon fruit also contains a lot of water-soluble dietary fiber, which has hydrophilic and absorbent characteristics, can be dissolved in water, not only can increase the volume of feces in the intestinal tract, but also to maintain the water in the feces, which makes the feces easily discharged. 3. Watermelon juice: watermelon contains a lot of water, about 90% of the whole fruit, can soften the feces, accelerate feces out of the body. If the patient’s constipation symptoms are serious, or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, to clarify the cause of the disease, under the guidance of the doctor for targeted treatment.