There is no so-called special medicine for psoriasis. Psoriasis can be treated with tazarotene, salicylic acid ointment and other medicines under doctor’s guidance, and psoriasis may be caused by heredity, bacterial infections and immune dysfunction. 1. Tazarotene: Tazarotene belongs to Vitamin A acid drugs, which has the effect of regulating the differentiation and proliferation of epidermal cells as well as reducing inflammation, and it is mainly used for the treatment of psoriasis of common type, plaque-type psoriasis and acne vulgaris, etc. It should be avoided that the drug comes into contact with the eyes, mouth and mucous membranes, and is forbidden to those who are allergic to the drug. 2. Salicylic acid ointment: for psoriasis caused by immune dysfunction, 2-10% salicylic acid ointment can be used. Salicylic acid ointment has the effect of antibacterial, antimicrobial, and keratolytic, and this drug is mainly used for the treatment of dermatomycosis, psoriasis and other diseases. Patients should avoid direct contact with the eyes, nose, mouth and other parts of the body, and should never be used on broken lesions and infected skin. There are many kinds of medicines for psoriasis, it is recommended that patients go to the hospital to confirm the diagnosis and treatment, and use the medicine under the guidance of the physician, and do not blindly use the medicine by themselves; in daily life, we should develop good living habits and pay attention to personal hygiene.