Introduction : From time immemorial, man has feared pain as the biggest suffering . From the time of Charak and Sushruta people have constantly being trying to find better methods of pain relief . Today one can not imagine how scaring surgery must have been in older days without any analgesia. The biggest contribution of medical science has been to win pain .Our O. T. is run quietly because of the help given by the anesthesiologist , so why should our labour rooms be a den of howling wolves ? It is dreadful to hear the shricks of labouring patients writhing in pain , hence the era of painless labour has ushered in.