Red heart dragon fruit is rich in large amounts of fiber, with laxative effect, but no drug efficacy. Red heart dragon fruit belongs to the fruit food, which contains a lot of water, fiber, vitamins, a large amount of fiber can lubricate the intestinal tract, promote gastrointestinal peristalsis, accelerate the discharge of food, is conducive to relieving constipation, to achieve the effect of laxative. When the patient constipation is not serious, can be appropriate to take red dragon fruit for laxative, if the patient constipation, or due to gastroenteritis, gastrointestinal tract tumors caused by laxative, consume red dragon fruit effect is not good. In addition, if the patient is too difficult to discharge the stool, red dragon fruit laxative effect is not good, it is recommended to consult the hospital as soon as possible to improve the relevant examination, to clarify the causes of poor discharge of stool, and to carry out appropriate treatment.