A number of reports about interscalene brachial plexus block for the surgery of shoulder, clavicle, and upper arm have described the advantage, especially to patients with limited shoulder motion and lung disease. This method can be used for short procedures which are bone biopsy, arthroscopy, closed reduction and percutaneous pinning of shoulder. It can also free from pneumothorax and torniquet pain. But other studies have listed Horners syndrome, phrenic block, recurrent laryngeal block, bilateral anesthesia, and spinal or epidural blockade. Thesecomplications can be avoided by careful procedure. Patients receiving interscalene brachial plexus block were randomly assigned to one of two groups according to the suspected operation time and the extent of trauma site. Group 1 received lidocaine 1.33% and group 2, lidocaine 1.33% plus bupivacaine 0.4~0.5%. All local anesthetics were added adrenalin. The blocks were carried out in the method described by Winnie. The agents used were lidocaine 1.33% and lidocaine 1.33% plus bupivacaine 0.4~0.5%. 12 patients have sufficient analgesia of the shoulder, supraclavicular region, and the upper arm, but one patient required 25 ug fentanyl during operation. There are no other complications except Horneris sign of two patients.