Objective To study the efficacy of grading treatment for cardiorenal syndrome.Methods 35 patients with cardiorenal syndrome were treated with enhanced oral medication,strengthened intravenous drug therapy or blood purification therapy treatment.Results With grading treatment,the majority of patients with cardiorenal syndrome improved.There were 34 cases improved.Conclusion The cardiorenal syndrome in patients with conventional therapy based on the classification treatment can improve cardiorenal syndrome in patients with heart and kidney dysfunction.