By consciously holding back the bowels can play the role of anal lifting upward, and then relax, this action repeatedly do can contract the anus. The contraction of the anus belongs to the anal lifting exercise, through the contraction of the anus can play a role in relieving constipation. The anal contraction exercise can be carried out anywhere and anytime, which is relatively convenient. The anal contraction exercise can improve the blood circulation around the anus, which can prevent the aggravation of hemorrhoid symptoms, and the anal contraction can prevent prolapse symptoms in infants and children. Usually pay attention to avoid long squatting, sitting, especially defecation time, try not to squat for too long, otherwise it is easy to appear the anal sphincter relaxation.