Psoriasis is a chronic inflammatory skin disease characterized by recurring layers of dry, silvery-white scales on red spots. In ancient Chinese medicine, it was called “white mange”, and in ancient medical books, it was also called ringworm. At present, most of the viewpoints that is blood heat, blood dryness and skin loss of moisturizing, treatment is to cool the blood and moisturize the dryness, dispel wind and stop itching mainly, the effective one has, the ineffective one is not a lot. According to many years of clinical thinking and access to classic medical books, I think it is more appropriate when the treatment from the lung theory, adjusting the lung as the basic law, with the wind to stop itching, diuresis and detoxification of dampness and so on with the evidence plus subtractions, the clinical efficacy of the exact. First, from the physiological point of view to recognize the relationship between the lung and the skin: 1, “Suwen – five Tibet generation” said: “the lung is also the skin, its glory hair.” Lung and skin, also known as the main lung skin, lung hair. “Su wen – cough theory” said: “fur, the lungs of the joint also, the fur first subjected to evil, evil from the joint also.” This kind of skin and hair by evil evidence when related to the lung. The Spiritual Pivot – The Other Theory of Meridians and Vessels also says: “The lungs are directed towards all the veins, and the essence is transferred to the skin and hair.” Lungs will be the distribution of fluids in the skin, “the lungs are full of gas, then the skin is dense and moisturized.” 2, the lung is the main pronouncement, can spread Wei Qi to the surface, regulating the coupling open and close, according to the body’s needs, control sweat excretion, regulate the body’s fluid metabolism, moisturize the skin surface. The spiritual center – this collection” said: “Wei qi, so the temperature of the flesh, full of skin, fat coupling, the Division of open and close also.” The difficult classic – twenty-four difficult” also cloud: “Taiyin lungs, the line temperature in the skin also.” Therefore, the lung gas is sufficient, full of Wei Qi, the coupling open and close the normal, smooth sweating, muscle surface gloss; if the lung gas deficiency, Wei external powerlessness, the coupling is open and unreasonable, the external evil attack on the surface, the Wei Qi is curbed, the surface of the muscle does not honor. 3, the skin can diffuse lung qi, help lung whistle. Xuanfu, that is, sweat holes, also known as “qimen” (“Suwen – angry Tongtian”.). As Liu Haima said: “the skin of the sweat hole is also known as the leakage of sweat orifices. The name “qi gate” means the gate for the release of qi.” (“Su Wen – Xuanji original disease style”) pointed out that the Xuanfu in addition to the function of sweat drainage, there is also a diffusion of lung gas, help lungs whistling role, so the name “qimen”. As Tang Rongchuan said in the “Chinese and Western medical scriptures”, “the skin belongs to the lungs, the lungs are more orifices to line the gas, and the skin is all orifices, so the lungs are declared gas, so that in and out of the skin to defend the outside as well.” Second, the formation of psoriasis mechanism: 1, the lung gas is unfavorable, the fluid can not be normal transmission, the skin does not glorify; 2, the lung gas is unfavorable, the human body muscle surface is closed by the evil beam, the hair orifices can not be blocked, and the internal depression and transformation of fever. Third, the treatment of psoriasis: “Suwen – to really want to discuss” put forward “its in the skin, sweat and hair” rule. There is also “to Xin Run”, “Huangdi Neijing Suwen Zhiqing” said: “Xin main hair dispersal, why can Run? To its Xin can open the coupling, to the internal fluid and gas in the outside, in the lower fluid gas in the upper, so can be moist also.” Case: male, 43 years old, psoriasis history of 5 years, by Chinese and Western medicine treatment effect is not good. When he came to the clinic, he had multiple skin lesions all over the body, uneven in size, thickened skin with white color, occasional itching, partially scratched, flaking, reddish rash after flaking, red tongue with white fur, stringy pulse. Add and subtract ephedra soup with raw ephedra 10g, cinnamon stick 5g, almond 30g, roasted licorice 10g, snakehead 30g, sarsaparilla 50g, white fresh skin 30g, mulberry white skin 15g, soapberry 15g, beehive 6g 7 doses, decocted with water, most of the rashes were dissipated after 7 doses, and basically cured after 2 months of maintenance treatment. Solution: Sweating and dispersing the surface, promoting the lungs to clear the depression. In the formula, ephedra is bitter, pungent and warm in nature, belonging to the lung and bladder meridians, good at opening the coupling and sweating, dispelling the evil in the surface; opening the closed and depressed lung qi. Gui Zhi, which penetrates the camp and reaches the guard, relieves the muscles and publishes, warms the meridians, which helps ephedra to relieve the epidermis and multiplies the power of sweating; and also smooths the yin of the camp. Almonds, Sang Bai Pi lower the lung qi and moisten the lung fluid, and ephedra together, declaring and descending combined to restore the lung qi of declaring and descending, moistening the lung, is a common combination of declaring and descending the lung qi. Roasted licorice can not only harmonize the Xuan-Di of Ma and Xing, but also moderate the harshness of the combination of Ma and Gui, so that sweating will not be too fierce and depletion of vital energy. Wu Zi Snake, Sarsaparilla, Bai Xian Pi dispels wind, clears heat and induces dampness; Soapberry and Beehive detoxify the toxin. The combination of all the medicines, the surface evil can be dispersed, Ying and Wei can be passed, the lung gas can be declared, the fluid can be dispersed, the skin can be glorified, and then all the symptoms can be cured.