Constipation, mainly manifested as dry stools, difficult to discharge, the formation of a variety of causes. Mainly includes the following aspects: (1) intestinal organic diseases: such as intestinal tumors, intestinal adhesions, anal fissures, hemorrhoids and other diseases induced by the formation. (2) Functional constipation: lack of bowel power, such as abdominal muscle weakness, intestinal smooth muscle weakness, etc.. In addition, intestinal spasm, abuse of strong laxatives such as marijuana zhi spleen pill and other dependence can also cause constipation. (3) slowed intestinal peristalsis: long-term bedridden or sedentary and long standing and other bad habits, can cause constipation formation. (4) side effects of drugs: some anticholinergic drugs and preparations containing calcium and aluminum, antidepressants, ganglion blockers, etc. can cause constipation. In addition also includes a series of drugs taken by many people deliberately to lose weight, etc. (5) dietary effects: if the food is too fine, the lack of necessary fiber, the large intestine does not line the necessary residue stimulation, can also be prone to constipation.