The patient has pimples in the anus, and especially itchy, the reasons are as follows: First, hemorrhoids: If you have inflammatory external hemorrhoids, the external hemorrhoids will be red, swollen, painful, and there will be inflammatory secretions on the surface, which will cause anal wetness and itching. Internal hemorrhoids prolapse outside the anus, the surface of the internal hemorrhoids will secrete mucus, there is inflammation when the secretion will increase, stimulate the perianal skin causing itching. Patients with hemorrhoids, to external hemorrhoid cream and hemorrhoid suppositories and other treatments; second, anal eczema: this is a common skin disease around the anus, the main symptom is itching, in the anus will be localized pimple-like pimples, to external antipruritic ointment and other methods of treatment. In ordinary life, patients should avoid spicy, stimulating food, eat more fiber-rich foods, keep the perianal area clean, hygiene, avoid fatigue, work and rest, life and work should be regular, to reduce the external stimulation of the local anus.