Soap and water butt wash for constipation should refer to the enema treatment of constipation, how long effective no standard, can not be generalized. Soap and water butt wash for constipation that is through the enema, the soap and water pressurized irrigation into the rectum, colon to stimulate intestinal peristalsis, lubrication of the intestinal tract, soften the feces, promote fecal discharge. Effective time is variable, generally need 10 to 20 minutes to defecate. Enema for constipation has a certain effect, but need to be completed under the guidance of professionals, the enema also need to control the speed, distance, master the correct method, in order to play the effect of constipation, and will not cause harm to the body. It is recommended not to blindly use enema when constipation, constipation should go to the regular hospital in a timely manner.