Epidural morphine is effective in the treatment of postoperative pain, but side effects, such as nausea, vomiting, pruritus and urinary retention commonly occur. Droperidol is frequently used as an antiemetic to prevent intraoperative and postoperative vomiting. But it has been reported to cause acute extrapyramidal effects including dystonia. We report one case of acute dystonia in young adult following the use of epidural droperidol.