The etiology of constipation includes the following 5 aspects: 1, poor diet and lifestyle habits; 2, organic and functional lesions; 3, psychiatric conditions; 4, endocrine and metabolic factors; 5, medical factors. Therefore, the etiological treatment of constipation contains the following 5 aspects: 1, should change the bad diet and living habits. 2, for organic lesions such as anal, rectal, intestinal obstruction, etc., should go to surgery or anorectal department for targeted treatment, and for functional diseases, can take gastric power drugs or laxatives. 3, for psychogenic conditions can be treated by antidepressant and psychotherapy, etc. 4, if it is endocrine and For metabolic factors, blood glucose should be controlled, and endocrine disorders should be corrected by active rehydration and potassium supplementation. 5. For medical factors, excessive use of laxatives and iron and anticholinergics should be stopped.