Often people will say that constipation is caused by recent fire, or drinking less water, or eating less vegetables and fruits. Although the cause of constipation is a local conduction disorder in the large intestine, the dynamic process of defecation is subject to multiple constraints, and lesions in any one part can affect the whole body. From the point of view of Chinese medicine, due to over-eating spicy alcoholic wine thick taste, resulting in the accumulation of heat in the stomach and intestines, heat is depleted fluid, so that the intestinal fluid dry, dry feces, and constipation. Excessive worry, or anger, liver depression, qi stagnation, loss of drainage, can lead to qi stagnation, through the descending disorder. In old age, the body is weak, and the qi and blood are deficient. If the qi is deficient, the large intestine is weak in conduction, and if the yang is deficient, the intestine loses warmth and the yin is cold, resulting in weakness in the stool and difficult and astringent stool. The constipation is caused by the stagnation of the stomach and intestines due to the indiscriminate consumption of cold and raw food, or the use of bitter and cold drugs, which injures the yang energy and causes the internal strength of yin and cold, resulting in the blockage of yang energy. The common causes of constipation are mainly the following: 1, ignore the intention of stool. With the accelerated pace of life, modern people are generally in a stressful work and living environment, can not maintain good defecation habits, the time to defecate not to defecate, often hold back the inconvenience, the large intestine on the signal issued by the intention to react more and more sluggish, gradually, there is no intention to defecate, resulting in prolonged defecation time and constipation. 2, poor defecation habits. Some people do not understand the physiological process of defecation, do not pay attention to anal health, dry stools do not want to go to treatment. There are some people whenever there is a sense of bowel movement, go to the toilet blindly force, or squatting in the toilet for a long time, so that the anus is overburdened. This is a bad habit. Good defecation habits are: regular defecation once a day, the least amount of force used during defecation, the shortest time required, smooth discharge, and a sense of relief after defecation. To achieve this step, first of all, to establish the regularity of regular bowel movements, so that the stool remains soft and easy to discharge; secondly, do not artificially control the sense of defecation, the prescribed time to squeeze out the stool, when the sense of bowel movement is obvious to immediately go to the toilet to defecate; thirdly, when defecating to seize the time, as soon as possible, do not read books and newspapers, smoke or think about the problem in the toilet. Before and after breakfast is the best time to defecate, because it is in line with the physiological laws of the human body. The stimulation of food can accelerate gastrointestinal peristalsis after eating, and this gastrointestinal reflex peristalsis can easily produce a sense of bowel movement. Upright after waking up in the morning can also appear colonic movement, so many people have to go to the toilet after waking up. 3, social and psychological factors. Work tension, sedentary, insufficient exercise is also the cause of constipation, interpersonal tension, family discord, mood in a long-term depressed state, can make the plant nervous disorder, causing intestinal peristalsis inhibition and constipation, emotional changes, tension, worry and other factors can lead to the weakening of intestinal peristaltic function, and constipation occurs. 4, diet, drinking habits are not good. Too little staple food will cause less food fiber residue in the intestine, less feces, too little effective intestinal stimulation, intestinal peristalsis slowed, feces in the intestinal tract stay too long, water is excessively absorbed by the intestine, resulting in dry stools, constipation. The intake of vegetables and fruits, etc., because vegetables, fruits and other foods rich in food fiber, vitamins, minerals intake is insufficient, so that the body lacks these essential nutrients, but also the lack of effective peristalsis of the large intestine, will also form constipation. Spicy food chili, onion, garlic and other spicy food can help fire hurt the side effects of fluid, easy to make the intestines lack of fluid and constipation. Regular alcohol consumption can also help fire and hurt fluid, leading to constipation. Drinking too little water leads to a lack of water in the intestines, which also causes constipation. Less activity, sedentary, prolonged bed rest will lead to slow intestinal peristalsis and cause constipation. 5, habitually take laxatives. Taking laxatives is always effective at the beginning, but the longer you take the drug, it will produce resistance, in order to be effective, it is necessary to increase the amount of medication, resulting in dependence on laxatives, which will eventually cause the weakness of intestinal peristalsis, so that not to eat drugs, you can not normal bowel movements.