The prognosis of patients with psoriasis is as follows: some patients are cured and never relapse for the rest of their lives; some patients have an attack once in 20 or 30 years; some patients have an attack every year and gradually worsen, which is relatively rare. As far as the current medical level is concerned, it will take time to completely cure psoriasis, that is to say, to “remove the root”. However, a clinical cure can be achieved. The following methods can slow down the onset of psoriasis: 1. Find out the cause of the onset as much as possible to avoid it. 2, can not be indiscriminate treatment, especially not to the wandering doctor that indiscriminate treatment, should go to the regular hospital dermatology treatment. 3, is to pay attention to diet, to avoid the intake of stimulating food, such as chili, ginger, raw onion, alcohol and so on. Try not to smoke or less smoking. 4, should avoid external stimulation, such as hot water scalding, strong scratching, soap transitional scrubbing and so on. Because psoriasis in progress can produce isomorphic reaction, the above excessive stimulation, can make the lesion area expand, aggravate the disease. 5, regular life, emotional stability, strengthen exercise, enhance physical fitness and body immunity, and prevent the occurrence of infection.