Causes of long-term constipation commonly include the following: 1, long-term poor diet, usually eat too much, excessive intake of high caloric value and high-fat food will cause a certain burden on the gastrointestinal digestion, thus aggravating the symptoms of constipation. In addition, usually drink too little water and too little intake of fruit can also cause; 2, exercise factors, usually too little exercise, sitting or bedridden for a long time will increase the burden on the gastrointestinal, causing the gastrointestinal peristalsis is too slow, and ultimately the formation of constipation symptoms. It should be noted that sedentary will increase the pressure on the rectal area, thus causing constipation; 3, some perianal diseases are likely to cause constipation, including hemorrhoids and rectal polyps, anal fissures can cause difficulties in defecation, thus aggravating the symptoms of constipation.