Banana boiled for 2-5 minutes has a certain effect on constipation, constipation patients should not only eat bananas, but also need fiber, which is widely found in leafy greens, including bok choy, spinach, celery, etc., with relatively high fiber content, as well as coarse grains, such as sweet potatoes, corn, etc., which also have a high fiber content. Patients usually also need to drink more water, because the main component of intestinal fluid is water, sufficient intestinal fluid can make the bowel discharge smooth. Patients can observe the color of urine, if the color of urine is no longer yellow, showing transparent and clear, it indicates sufficient water.