At present, psoriasis cannot be cured, but the following methods can be used to reduce the recurrence of psoriasis: First, patients should be guided to understand psoriasis correctly, and proper treatment as well as proper exercise can reduce the recurrence of psoriasis. Second, to prevent infection, psoriasis is related to infection, of which streptococcal infection is not only closely related to acute punctate and plaque psoriasis, but also arthritic psoriasis exists. Third, to avoid moisture, cold, try to avoid large cold and heat to stimulate the skin, keep the living place ventilation and dry. Fourth, to protect the skin barrier function, psoriasis patients themselves exist in the skin barrier is obviously damaged, in the treatment process to advise patients to use more moisturizing emollients. Fifth, try to avoid physical trauma, because psoriasis has a homomorphic reaction, avoiding physical stimulation can reduce the onset of psoriasis lesions.