Henoch-Schnlein purpura(HSP) is a small-vessel vasculitis mediated by IgA-immune complex deposition.It is characterized by the clinical tetrad of non-thrombocytopenic palpable purpura,abdominal pain,arthritis and renal involvement.The diagnosis of HSP is difficult,especially when abdominal symptoms precede cutaneous lesions.We report a rare case of paroxysmal drastic abdominal pain with gastrointestinal bleeding presented in HSP.The diagnosis was verified by renal damage and the occurrence of purpura. Henoch-Schnlein purpura (HSP) is a small-vessel vasculitis mediated by IgA-immune complex deposition. It is characterized by the clinical tetrad of non-thrombocytopenic palpable purpura, abdominal pain, arthritis and renal involvement. The diagnosis of HSP is difficult, especially when abdominal symptoms precede cutaneous lesions. We report a rare case of paroxysmal drastic abdominal pain with gastrointestinal bleeding presented in HSP. The diagnosis was verified by renal damage and the occurrence of purpura.