The causes of constipation after general anesthesia surgery are as follows: 1, due to anesthesia drugs are not fully metabolized, may remain in the body, affecting intestinal peristalsis, so constipation occurs after the operation. 2, sometimes general anesthesia surgery is aimed at abdominal intestinal surgery, so the recovery of intestinal function after the operation is slower, fecal matter retained in the colon for a long time, which will lead to the absorption of large amounts of water, and constipation symptoms occur. 3, general anesthesia operation After the anesthesia, anesthesia drug metabolism has basically finished, but the patient’s mental state or nutritional state recovery is poor, is also the main cause of constipation. Therefore, after general anesthesia surgery, should try to encourage patients to appropriate clinical activities, promote intestinal peristalsis, if necessary, can also apply warm soapy water, or open enema, which can effectively prevent and reduce the occurrence of constipation.