We report a case in which an intramural and intraluminal hematoma of the jejunum served as the lead point of intussusception in a 77-year-old man with warfarinization. The patient presented with cramping abdominal pain and vomiting. Palpation of the abdomen revealed periumbilical tenderness. Abdominal computed tomography revealed a circular mass with a concentric ring, consistent with an intussuscepted jejunum. Because of warfarinization, which was due to atrial fibrillation and lacunar infarction, the patient's prothrombin time was prolonged. Laparotomy revealed reducible jejuno-jejunal intussusception, and we performed a segmental resection of the intussuscepted jejunum. We identified an intramural and intraluminal jejunal hematoma as the lead point. Upon histopathological examination, angiodysplasia of the intussuscepted jejunum was found to be the bleeding focus. No similar case was found in the literature.