External hemorrhoids are a mass of varicose veins located below the dentate line, and they tend to bleed pus when combined with infection. In this case, surgical treatment should be performed promptly. The external hemorrhoids should be excised or abscesses should be drained in time, and anti-inflammatory and hemostatic treatment should be given after surgery. You can also give herbal fumigation solution or warm salt water sitz bath to promote blood circulation around the anus and reduce the venous stasis of external hemorrhoids, which leads to the reduction of external hemorrhoids and promotes the drainage of pus. If left untreated, external hemorrhoids can spread around the anus and form larger abscesses. You can also perform perianal ultrasound to clarify its location and cause and scope, and you can perform surgical treatment in time, i.e. abscess incision and drainage.