Due to high incidence of renal damage by Hench-schonlein Purpura(HSP) is the key to affect prognosis, this project moves the research emphasis forward in line with the idea of "prevention of progress of disease", Which concerns on Traditional Chinese Medicine(TCM) clinical research scheme evaluation of HSP, evaluates the renal damage and disease recurrence as the end event, and comes to the evaluation through the comparative study that the vantage point of the scheme of syndrome differentiation and treatment in detoxification, cooling blood and removing blood stasis to the conventional treatments can reduce kidney damage and recurrence rate.