Psoriasis is one of the more unsatisfactory skin diseases in clinical treatment. Most patients feel that the erythematous scales are slow to subside during treatment, and when they have just been treated well, the erythematous scales will soon appear again when they are anxious and nervous about a cold or eat a little fishy food. How to make the psoriasis lesions recede faster and try not to recur soon after receding is a problem that clinical dermatologists need to solve, many clinical psoriasis patients have such experience, they always feel that they have heat toxicity in their bodies and hope that the doctor will help to clear it, thinking that the lesions may be much better after the heat toxicity is cleared, which is consistent with the dialectical opinion of traditional Chinese medicine on psoriasis. Mr. Zhao Bingnan, the great leader of modern Chinese medicine dermatology, believes that the cause and mechanism of psoriasis is related to poisonous heat in the blood. I myself have been using blood cooling and detoxification method to treat psoriasis for many years, together with some effective western medicine methods such as narrow wave UVB light therapy and some western medicine non-hormonal topical drugs. Two years ago, I reformulated the formula of herbs, and the power of cooling and detoxifying the blood was increased, hoping that the clinical effect would be better, but I did not have much confidence in how much better it could be. We try to clear the heat toxicity as much as possible, so that the lesions will not easily come out again.