There are many ways to treat anal fissures, and it is generally believed that conservative therapy should be used for early anal fissures. The more reliable conservative therapy is to keep the stool thin and soft, local medication, anal dilation and injection. For old anal fissures (chronic anal fissures), surgical treatment should be used. It is generally believed that: internal sphincterotomy should be preferred if there are no serious comorbidities, and anal fissure excision or anal fissure excision skin grafting should be chosen if there are combined subcutaneous fistula, anal papillary hypertrophy and sentinel hemorrhoids. In conclusion, the treatment principle of anal fissure should be: to relieve pain and promote ulcer healing, to differentiate different lesions, and to reasonably administer treatment. As for the various advertisements boasting of this instrument, that high-tech are all tricks to fool people, to put it bluntly, there is no essential difference with surgical treatment, and even not as advantageous as surgery.