The rash manifestation of simple moss can appear as large plaques with fine scales, plaques, rash pattern with deepened furrows and elevated mossy skin ridges. Clinical treatment requires the application of a strong glucocorticoid ointment, such as halometasone ointment applied twice a day, or fluticasone propionate ointment applied once a day, together with nourishing and moisturizing medications, such as vitamin E ointment, or zinc oxide borate ointment applied twice a day. If the above treatment is accompanied by significant itching, oral anti-allergy medication such as levocetirizine hydrochloride capsules once a day at night, or loratadine citrate capsules once a day at night, together with compound glycopyrrolate capsules two capsules three times a day. During the treatment period, you need to avoid scratching, avoid spicy and irritating food, avoid drinking alcohol, and ensure good rest and sleep.