Because feces is mainly composed of food digestion, so through dietary regulation to prevent constipation is a simple and easy way. First of all, we should pay attention to the amount of diet, only enough to stimulate intestinal peristalsis, so that the normal passage of feces and excretion. In particular, breakfast should be full. Secondly, we should pay attention to the quality of the diet, the main food should not be too fine, pay attention to eat some coarse grains and grains, because coarse grains, grains after digestion residue, can increase the amount of stimulation of the intestinal tube, conducive to the operation of the stool. Side dishes should pay attention to eat more vegetables containing more fiber, because normal people need 90-100 mg of fiber per kilogram of body weight to maintain normal bowel movements. You can eat more bok choy, leek, celery, tomatoes, etc. Because the fibre is not easily digested and absorbed, the amount of residue can increase the volume in the intestinal canal, improve the pressure in the intestinal canal, increase intestinal peristalsis, which is conducive to defecation. There is also to drink more water, especially heavy laborers, because of sweating, breathing, water consumption, water in the intestinal tube is bound to be absorbed in large quantities, so to prevent dry stool will have to drink more water. A glass of water before breakfast or after waking up has a mild laxative effect. Drink enough water to make the intestine get enough water can facilitate the passage of intestinal contents. In addition, you can intentionally eat more food containing fat, such as walnuts, peanuts, sesame, canola oil, peanut oil, etc., they have a good laxative effect. 1, develop good defecation habits Everyone has various habits, stool is no exception, to a certain time to defecate, if often delayed stool time, destroy the good defecation habits, can make the defecation reflex weak, cause constipation, so do not artificially control the sense of defecation. For those who are often prone to constipation must pay attention to the bowel arrangement in a reasonable time, every time to go to the toilet, to develop a good defecation habits. 2, active physical exercise activities, activities, stool since the passage. Walking, running, deep breathing exercises, qigong, taijiquan, turn the waist and lift the legs, participate in cultural and sports activities and physical labor, etc. can strengthen the gastrointestinal activities, appetite, diaphragm, abdominal muscles, anal muscles to exercise; improve defecation power, prevent constipation. Regular work of the rural elderly rarely constipation, and lazy activities, the city of the elderly constipated more, which explains this reason. In ancient times, the art of channeling was used to prevent constipation. Miscellaneous disease source flow rhinoceros turbid” said “to protect the secret of life said, with the tongue on the palate, keep hanging congestion, quiet thoughts and liquid from the mouth, once full, red dragon stirring, frequent gargling and swallowing, listen to descend straight down the Dantian, and keep quiet throat several times, the large intestine from the wet, line after the efficacy.” For the elderly and frail people is really appropriate. 3, timely treatment of diseases related to the treatment of diseases on the prevention of constipation also has a certain role. Such as allergic colitis, diverticulitis, colon tumors, colon stenosis; hypothyroidism, diabetes; uterine fibroids; lead, mercury and other metal poisoning.