Anal canal stenosis dilation rods need to be used according to their condition, starting from the smallest size and gradually expanding. Dilatation rod generally refers to stainless steel medical anal dilatation rod , diameter from 6mm-30mm ranging from small to large diameter, step by step, and gradually reach the ideal size. Do not be too hasty, the technique should be gentle, so as not to stab the anus. Depending on the condition, follow the doctor’s advice to dilate the anus regularly for about 5-10 minutes each time to achieve symptomatic relief and cure. In case of anal stenosis, the final goal of anal dilation is to reach the width of an adult’s two fingers, i.e. about 30mm. Anal stenosis is usually seen in congenital anal stenosis, usually in infants and young children; low rectal cancer anastomosis can also lead to anal stenosis; and fibrous scarring after circumferential resection of the mucosa over the hemorrhoids can also occur. Once anal canal stenosis is diagnosed, it is recommended to actively cooperate with doctors for the best treatment.