Perianal abscesses, mostly from anal gland and sinus infections. Whether a perianal abscess collapses on its own or is drained by a simple incision, the result is that most of them leave an external opening, which often remains untreated for a long time, with pus and recurrent swelling and pain. This lesion is medically known as an anal fistula. It can be said that perianal abscess and anal fistula are different stages of the same disease. It is known that clinical studies have proven that perianal abscesses can easily lead to anal fistulas. This study has caused distress to many patients with perianal abscesses. Perianal abscess is a common anal disease, and more than 95% of patients with perianal abscess have a fistula. They are characterized by self-rupture or often form a fistula after surgical incision and drainage. However, not all perianal abscesses develop into fistulas, because there are fistula-forming and non-fistula-forming abscesses. It is often said that perianal abscess and anal fistula are a pair of difficult brothers and sisters, two bitter gourds growing on a vine. The most important thing is that you will be able to get the most out of your time. To treat perianal abscess, exploring the internal mouth is the key. At present, the main clinical application of rectal cavity ultrasound technology accurate positioning, scientific treatment, so that the symptoms disappear and achieve the purpose of cure. Anal experts say that if a perianal abscess is not treated in a timely manner, it can easily spread to the soft tissue spaces around the anus and form new abscesses. At the same time, be careful not to forcibly squeeze the abscess by yourself, so as not to spread the infection and cause systemic infection poisoning. Once a perianal abscess is formed, it should be treated immediately to interrupt its spread; regardless of the type of perianal abscess, it should be treated at once to avoid sequelae such as anal fistula.