The anal throbbing is often caused by the following reasons: 1, anal muscle spasm: there are many causes, such as constipation or abnormal reflexes of the nerve, generally do not worry too much, usually you can take a sitz bath treatment to relieve the discomfort symptoms. The sitz bath solution can be chosen from warm water or herbal preparations, etc. Generally, sitz bath 1-2 times a day, 10-15min each time, the symptoms can be gradually relieved. 2, perianal abscess: there will be a throbbing sensation in the anus, and at the same time there will be pain, you need to go to the general surgery department of the hospital, or the anorectal surgery department for clarification. If it is the disease, antibiotics need to be given for treatment, commonly used drugs are cephalosporin antibiotics, or penicillin antibiotics, etc.. Surgery is also needed, usually with an incision and regular drug changes, and some patients need to be treated with medication in a sitz bath to promote healing as soon as possible.