Psoriasis of the legs, also called psoriasis, can affect the quality of life of patients, and the treatment includes local treatment, systemic treatment and phototherapy. 1. Local treatment: medicines such as tazarotene cream, calcipotriol ointment and tacrolimus ointment can be applied to the affected area. In addition, the skin should be kept hydrated and moisturized by applying petroleum jelly. 2. Systemic therapy: Commonly used medications include cyclosporine, methotrexate, avitamin A, etc. 3. Phototherapy: Narrow-spectrum UVB treatment can be used, in addition, if the patient’s condition is more serious, 308nm excimer laser treatment, PUVA treatment, etc. can also be used. Patients should go to the dermatology department in time, actively cooperate with the doctor’s treatment, and should not use drugs arbitrarily.