Eating pears can laxative, because pears contain fiber and vitamins, vitamins can promote sugar, fat and protein metabolism, which is beneficial to human metabolism. The fiber content in green leafy vegetables is higher than pears, such as spinach, bok choy, celery. Fiber is necessary for the formation of stool, eat more vegetables for health benefits. Constipation patients can also eat coarse grains, such as sweet potatoes, corn, which also has a high fiber content, but not including sweet corn, because its fiber content is relatively low, can cure constipation of corn is fuller particles, eat more chewy corn. Constipation patients usually also need to drink more water, drinking water can increase the intestinal fluid content, intestinal fluid is easier to defecate, will not appear constipation.