Abstract: Objective To observe the therapeutic effect of peppermint oil for Demodex in human body surface.Methods 82 positive volunteers were divided into two groups.One as study group included 42 cases,another as control group included 40 cases.6.25% peppermint oil and 10% sulphur ointment were respectively used to treat the volunteers in two goups for 25 days in order to knowing the therapeutic effect of peppermint oil.Results The effective rate of the group of peppermint oil was 85.7%(36/42),and 42.5% of the group...