We conducted a study, in a prospective, randomized, comparative study, we compared the ultrasound guided technique with conventional technique for brachial plexus block by the infraclavicular approach. Brachial plexus block by infraclavicular approach was performed in 60 patients of ASA Grade I and II posted for upper limb surgeries below the mid arm. The patients were randomly allocated into two Groups. In Group USG, block was performed under ultrasound real time image guidance and in Group CT, block was performed by manual conventional technique. Aim of the study was to compare the performance time, number of attempts, onset of sensory anesthesia and motor block, success rate, duration of action (post-operative first analgesia required), complications and patient compliance during procedure with ultrasound (USG) guided and conventional technique (CT) brachial plexus block by infraclavicular approach1,2,3.