过敏性紫癜时的肾脏损害（紫癜性肾炎）是决定过敏性紫癜患者远期预后的重要因素，其发生率国内报道为３０％～６０％，国外通过肾活检诊断高达９０％～１００％［１］。患者有一过性血、尿微球蛋白。本病绝大多数发生在小儿，尤以７～９岁的小儿最为常见。紫癜性肾炎是毛细血 Henoch-Schonlein Purpura (HSP) is an important factor that determines the long-term prognosis of patients with Henoch-Schonlein purpura, the incidence of which is reported as 30% -60% in China and 90% -100% by foreign biopsy [1 ]. Patients have a transient blood, urine microglobulin. The vast majority of this disease occurs in children, especially in children 7 to 9 years old the most common. Purpura nephritis is capillary