Anal pain can be caused by lesions in the rectum, anus and perianal area. It is common in people who like spicy food and drink alcohol for a long time, and is caused by constipation after defecation or constipation, and can be improved by adjusting the diet. If the lesion is serious and a lump can be touched inside or outside the anus or accompanied by other symptoms, it is recommended to seek medical examination to confirm the diagnosis and treat the cause. 1. Rectal and perianal infections 1. Causes: Most of them are caused by improper diet, resulting in intestinal infections caused by bacteria, viruses or other pathogenic bacteria, resulting in repeated diarrhea, which can be accompanied by abdominal pain and watery stools; also seen in perianal infections, such as perianal abscess, sinusitis, anal papillitis, etc., where inflammatory factors stimulate the anus and pain occurs; 2. Cefixime, penicillin and other drugs are commonly used clinically for oral administration and intravenous infusion if necessary, and the anal pain can be relieved after the infection is controlled. If there is an abscess, incision and drainage can be performed. Second, anal diseases 1, etiology: common in internal and external hemorrhoids and their cause of impaction, inflammation, anal fistula, anal fissure, etc., so that the anal sphincter edema spasm, resulting in pain; 2, treatment: can be given ibuprofen or aspirin pain relief, can improve local blood circulation through sitz bath, Chinese medicine, etc., long-term bleeding or pain can be considered injection sclerotherapy. Tumor diseases 1. Etiology: seen in rectal cancer, anal canal cancer, anal cancer, etc., with the growth of cancer, compression of local nerves and blood vessels in the anus can cause pain; 2. Treatment: surgical removal of tumor can relieve pain, if it is a malignant lesion, auxiliary radiotherapy and targeted therapy are also needed. IV. Other 1. After various anal surgeries, when the effect of anesthesia is eliminated, pain can be felt, and painkillers can be given as appropriate. In addition, postoperative scarring and stenosis of the anus can also lead to anal pain, and if necessary, surgical treatment is feasible; 2. Sciatica caused by lumbar disc protrusion or other causes can also involve anal pain, as well as mental factors, trauma, foreign bodies in the rectum, etc., can lead to anal pain, and it is recommended to seek medical advice to clarify the cause and carry out treatment.