Henoch-Schönlein purpura (HSP) is a vasculitis involving small vessels of skin, joints, gastrointestinal (GI) tract, and kidneys. The patients typically show palpable purpura with one or more characteristic manifestations including abdominal pain, hematuria or arthritis. HSP shows gastrointestinal symptoms in 50~85% of patients, and in 14~40% of patients GI symptoms precede purpuric rash which makes the diagnosis of HSP difficult. We present a case of Henoch-Schonlein purpura with GI bleeding, septic shock by ileal microperforation, small bowel obstruction as a result of ileal stricture and psoas muscle abscess.