If anal pain after rectal cancer surgery may be caused by anesthesia failure or infection, bleeding, etc., general measures and medication are usually needed to reduce the pain. 1. Failure of anesthesia: Usually, anal pain will appear when anesthesia fails, if the pain is mild, usually no treatment is needed, which is normal and the pain is within the tolerable range. For patients with severe pain, hot water sitz bath can be taken to relieve the pain to a certain extent. Secondly, painkillers, such as morphine and oxycodone hydrochloride extended-release tablets, should be applied under the guidance of a doctor if necessary. 2. Infection: if anal pain after rectal cancer surgery is caused by complication of infection, in addition to the above treatment measures, patients need to apply antibiotics such as amoxicillin, ceftriaxone sodium, ofloxacin and other antibiotics according to doctor’s instruction. 3. Bleeding: If the amount of bleeding is too small, there is no need for special treatment. If the bleeding is too much, patients need to cooperate with the doctor to apply hemostatic drugs, such as hemostatic minerals, hemostatic arginate, hemocoagulase and so on, and if necessary, they need to consider endoscopic hemostatic treatment. Besides, it may be caused by recurrence, metastasis, anastomotic fistula, etc. Patients need to cooperate with doctors to do relevant examinations to clarify the cause of anal pain after rectal cancer surgery and take appropriate treatment measures according to the cause.