Objective：To observe the curative effect and nursing experience of external application of modified Sihuang powder in adjuvant treatment for erysipelas of the lower limbs.Methods：Divided 92 cases of patients accorded with requirement into the control group with 45 cases and the observation group with 47 cases randomly.Both groups adopted the symptomatic treatment and were treated with antibiotics and the control group was treated with wet packing of 50% magnesium sulfate.The observation group adopted the external application of modified Sihuang powder.Evaluated the scores of local symptoms and signs before and after treatment and recorded the disappearance time of fever，pain and swelling；recorded the time of recovery(leukocyte count and neutrophil count).Results：Rank sum test showed that the clinical effect in the observation group was better than that in the control group，difference being significant(Z=1.175，P ＜ 0.05).The disappearance time of fever，pain and swelling and the time of recovery of peripheral blood in the observation group were shorter than those in the control group and there was significant difference being found in the comparison between the two groups(P ＜ 0.01).After treatment， the scores of the pain degree， swelling degree， skin temperature， skin color and dysfunction in the two groups were all decreased when compared with those before treatment(P＜0.01).After treatment，the scores of pain，swelling and dysfunction in the observation group were all lower than those in the control group and there was significant difference being found in the comparison between the two groups(P＜0.01).Conclusion：The external application of modified Sihuang powder in adjuvant treatment for erysipelas can rapidly relieve the symptoms，shorten the course and reduce the pain，which promotes the recovery of the disease and enhances the clinical effect.