Henoch Schonlein purpura nephritis is a systemic inflammatory response of systemic vasculitis in anaphylactoid purpura,it is often occurred in childhood with systemic vasculitis reaction.Some patients will develop nephritic syndrome or nephrotic syndrome,even kidney failure,either of which is harmful to the health of children.However,a unified standard for the diagnosis and treatment of purpura nephritis is still lack.Combined with the latest research results,this research intends to review the pathogenesis,clinical diagnosis and treatment of purpura nephritis.