Kampo medicine has been used for over 4,000 years. Recently, some Kampo formulas have been prescribed for postoperative pediatric patients with gastrointestinal anomalies and disease. However, it has been only 30 years since Kampo medicine has been widely used in the pediatric surgical field. Some of the principal Kampo formulas used for daily treatment in the pediatric surgical field are: Rikkunshito and Bukuryouin-Gou-Hangekoubokuto for patients after upper gastrointestinal surgery; Daikenchuto for patients after colorectal surgery; Inchinkoto for postoperative patients with biliary atresia; and Hainosankyuto for periproctal abscess. Kampo formulas according to the postoperative condition are reviewed from the viewpoint of evidence-based medicine, our experience, and experiments. The results of the Kampo treatments listed above were superior to the results when a Kampo formula was not administered in pediatric patients postoperatively.