A 60-year old man admitted our hospital due to abdominal pain, melena and arthralgia. There was purpura on his legs. On admission, the abdominal CT showed segmental mural thickening of terminal ileum and ascites. On the 4th hospital day, the abdominal CT showed severe mural thickening of the third portion of duodenum. On the 8th hospital day, the abdominal CT showed severe mural thickening of terminal ileum. We reported a rare case of Henoch-Schönlein purpura with relapse of ileitis and duodenitis for a short period which could be examined on the abdominal CT.