Objective: To analyze the clinical characteristics of Henoch-Schonlein purpura nephritis(HSPN).Methods: The clinical data of 90 HSPN patients were analyzed.Results: The patients with proteinuria over 1 gram per day and those with nephritic proteinuria accounted for 64.44% and 27.78%

respectively.Persistent gross hematuria often accompanied severe proteinuria even nephritic syndrome.Leucocyturia prevalence increased while the proteinuria became severe.Conclusion: Adolescent and adult HSPN have many clinical presentations with high index of gastral bleeding.The clinical presentations are getting worse with the increasing profile of proteinuria.Persistent gross hematuria and leucocyturia may reflect the severity and activity of HSPN.