Acyclovir ointment usually does not treat eczema. Acyclovir ointment belongs to the purine nucleoside class of antiviral drugs, mainly against herpes simplex virus, varicella-zoster virus, and cytomegalovirus inhibitory effect, mainly for the treatment of viral skin diseases, generally has no effect on eczema. Eczema is an allergic skin disease caused by a variety of internal and external factors and is clinically considered to be related to diet, medication, infection and environmental stimulation. The treatment of eczema is mainly anti-allergic, when eczema has exudation, you can use 3% boric acid solution or skin disease lotion wet compress, external washing, etc.. When the eczema is dry and there are only erythema, you can apply topical mometasone furoate cream or dehumidification and antipruritic ointment, etc. In severe cases, you can combine antihistamine drugs, such as levocetirizine hydrochloride tablets or loratadine citrate tablets, etc.