Background: This study was conducted to evaluate and compare the effectiveness of intravenous ketorolac and wound infiltration in producing postherniorrhaphy analgesia in pediatric surgery. Methods: Forty consenting healthy children, aged 3~7 yr, were randomly assigned to receive intravenous ketorolac (1 mg/kg) or wound infiltration (0.25% bupivacaine 0.3 ml/kg) before closure of the surgical wound after inguinal herniorrhaphy. Pain was evaluated by using an observer pain score at 30 min, 60 min and 4 hrs intervals, postoperatively. Results: It is statistically significant that the wound infiltration group had lesser pain than the ketorolac group at 30 min and 60 min. But there is no difference between the groups at 4 hrs, postoperatively. Conclusions: We concluded that wound infiltration may provide better analgesia compared to intravenous ketorolac for up to 4 hours postoperative for treatment of pain after inguinal herniorrhaphy in pediatric surgery.