This study was designed to evaluate the effects of retention enema therapy on patients with ileus. We retrospectively analyzed the medical records of two patients with ileus whose main symptoms were nausea, vomiting, constipation and abdominal pain. They were treated with retention enema therapy. After treatment, improvement was seen in nausea, vomiting, constipation and abdominal pain. The results of this study suggests that retention enema therapy is effective for the treatment of ileus.