Background: Caudal epidurals are commonly performed for postoperative pain management in children undergoing abdominal and lower limb surgeries. Bupivacaine is considered the most common local intrathecal anesthesia for children. Various adjuvants were combined with the local anesthetic to increase intrathecal block quality and extend analgesia duration. Present study was aimed to compare bupivacaine versus bupivacaine with fentanyl for caudal epidural anaesthesia and analgesia in children undergoing lower abdominal surgery.