Psoriasis is a common chronic skin disease that is characterized by hypertrophic, erythematous, scaly patches of epidermis and has a serious impact on the physical and mental health of patients. Its etiology is not fully understood, but it is known to be related to genetic inheritance, immunity, infection, and living environment. Traditional Chinese medicine believes that the etiology of psoriasis is due to heat in the blood and heat toxicity in the skin, insufficient blood in the blood and blood deficiency, wind and dryness in the skin, and that psoriasis is a disease that is closely related to mood swings. In June 2001, I attended the World Psoriasis Congress held in San Francisco and presented a paper on “Clinical Analysis of Natural Herbal Medicine for Psoriasis”, which reported that the author has been practicing in clinical practice for more than 30 years and has used traditional Chinese medicine to treat psoriasis. In the past 30 years of clinical practice, the author has treated psoriasis of the common type by regulating the internal functions of the human body, using a natural herbal soup, Rhizoma Dihuang Tang, with an addition and a reduction, guided by the idea of “treating the root”. The treatment is carried out by regulating the internal functions of the body. After a course of treatment (six months) or more, the patient had a high efficiency: significant effect reached 41.3%; improvement was 54.4%. Patient Li, male, 31 years old, with 16 years of disease duration, dotted erythema, thick scales, diffuse distribution of lesions, diagnosed as common dotted psoriasis, with red tongue, thin yellow moss, and string pulse, identified as: heat in the blood, heat toxin accumulation in the skin, proposed to cool the blood to clear heat and detoxify, with Rhizoma Dihuang Tang plus reduction, after four months of treatment, the lesions light red, thin scales, part of the hypopigmented spots, the efficacy is remarkable; patient Wang, female, 50 years old, with 10 years of disease duration, the efficacy is high. She was diagnosed with common type coin-shaped psoriasis, with yellow facial impotence, pale tongue, thin coating, and thin pulse. The remarkable features of this therapy are low recurrence rate, light degree of recurrence, as well as non-toxic and non-side effects of treatment drugs, and no drug resistance. Currently, under the trend of advocating natural medicine, the therapeutic effect of Oriental medical ideas and natural herbs has attracted the attention of the Western medical community and many patients.