Caudal analgesia is one of the most popular method for intra and post-operative method for abdominal, perennial and lower limb surgeries for children’s. For local anesthetic common drug used is Bupivacaine. In children caudal epidural block is one of the common anesthetics techniques in children. It is the general, simple and safe procedure for local anesthetics. It is administered as single shot technique. Several adjuncts such as opioids, ketamine, midazolam, clonidine and neostigmine have been used with bupivacaine to prolong its action & thus extend the duration of post-operative analgesia provided by the ‘single shot’ caudal technique.