Psoriasis can be treated with retinoic acid preparations, glucocorticoids, vitamin D3 derivatives, and compounded preparations. Psoriasis is an immune-mediated polygenic hereditary skin disease. 1. Vitamin A acid preparation: inhibit the function of sebaceous glands, reduce the production of sebum, vinpocetine, isotretinoin, tazarotene, etc. It is forbidden for those who are allergic to the drug. 2. Glucocorticoids: can be used for the treatment of mild to moderate psoriasis, can significantly reduce itching, hydrocortisone, mometasone furoate, fluticasone propionate, etc., allergic to drugs, infectious dermatosis is prohibited. 3. Vitamin D3 derivatives: can inhibit the proliferation of skin cells and induce their differentiation, such as capotriol, allergic to drugs is prohibited. 4. Compound preparations: such as compound Capotriol (Capotriol + Betamethasone), compound Clobetasol Propionate (Vitamin A acid + Clobetasol Propionate), compound Tazarotene (Tazarotene + Betamethasone) and so on. It is contraindicated for those who are allergic to the drugs. Psoriasis should be treated by a professional doctor, follow the doctor’s instructions for medication, not blindly self-medication.