Intractable lower abdominal and pelvic pain Patients with cervical cancer are prone to intractable lower abdominal and pelvic pain, which seriously affects patients’ quality of life, and pain medications often have poor therapeutic effects. The domestic and foreign literature reports that sympathetic nerve block can relieve visceral pain; among them, abdominal plexus block and inferior epigastric plexus block have better efficacy on abdominal and pelvic visceral pain, respectively. Sympathetic nerve Anatomical location: The sympathetic nerve is part of the vegetative nerve. It consists of a central part, sympathetic trunk, ganglia, nerves and plexuses. The central part is located in the entire length of the thoracic segment of the spinal cord and in the lateral horn of the gray matter of segments 1 to 3 of the lumbar medulla. The sympathetic trunk is located on both sides of the spinal column and is connected by sympathetic trunk ganglia and intersegmental branches, which can be divided into 5 parts: cervical, thoracic, lumbar, sacral and caudal. Ventral plexus Anatomical location: The ventral plexus, also known as the solar plexus, is distributed around the abdominal organs and is a branch of the sympathetic and parasympathetic nerves, and is the largest vegetative plexus. Anatomical location: (i.e. anterior sacral plexus, sacral plexus) and inferior infra-abdominal plexus (i.e. pelvic plexus, pelvic plexus) constitute the infra-abdominal plexus, which is one of the important components of the visceral plexus and mainly innervates the pelvic organs. The main characteristics of pelvic pain in cervical cancer: (1) inaccurate localization, the patient cannot clearly inform the specific site of pain or the site changes frequently; (2) slow onset and long duration; (3) sensitive to pulling and dilating stimuli, insensitive to stimuli causing skin pain such as cutting and burning; (4) often accompanied by emotional reactions such as nausea, vomiting and changes in cardiovascular and respiratory activities; (5) may be accompanied by abnormalities of urination and defecation. Effectiveness: For some patients with pelvic pain from cervical cancer who are not relieved after standard drug treatment or whose drug treatment cannot be continued due to severe side effects, sympathetic blockade can help relieve such pain and significantly reduce the dosage of opioids, as well as reduce the side effects of opioids. Prospect: This technique is a minimally invasive interventional operation to treat pain in the abdomen and perineal region under imaging guidance. Using a fine needle of 10 cm similar to the thickness of a venipuncture needle, the needle is penetrated near the inferior epigastric plexus under the imaging surveillance of CT or C-arm, and a photographic agent is injected to show the extent of drug distribution, and after meeting the treatment need, local anesthetic drugs are injected, and after showing the analgesic effect, destructive drugs are injected. After the operation, the patient is usually discharged after 2-3 days of observation. This technique is less invasive, effective and requires low physical fitness of patients, and is also suitable for pain and discomfort in the lower abdomen and lumbosacral region caused by rectal cancer, ovarian cancer, lower abdominal lymph node metastasis, pelvic metastasis and other tumors.