The vast majority of hemorrhoids after minimally invasive surgery, do not need to expand the anus, if the patient after the operation of anal stenosis or anal constriction, need to expand the anus after the operation treatment. After hemorrhoid surgery, the vast majority of patients with local wounds in the anus can be normal recovery, there is no need to expand the anus treatment, pay attention to local cleanliness and hygiene, regular medication changes, to maintain a smooth bowel movement can be. Hemorrhoids minimally invasive surgery, small trauma, fast recovery, generally does not cause anal stenosis, so after surgery without anal expansion treatment. A small number of people due to the surgical process in the defective parts of more, or after surgery, due to the intense pain of the wound and lead to anal localization, in the long-term sphincter contraction state. Thus, in the late stage of wound growth, the tightness of the local anus shrinks and anal stenosis occurs. The above symptoms need to be treated with appropriate anal dilatation after the surgery. Generally, it is recommended to choose manipulative anal dilation or use professional anal dilation equipment to dilate the anus. In order to prevent postoperative anal stenosis, it is recommended that if the patient is in too much pain after the operation, he can choose oral or topical painkillers under the guidance of the doctor to relieve the pain and symptomatic treatment, such as diclofenac, and at the same time can be combined with the softening of stools to reduce the irritation of dry and hard feces on the wound.