Acne is not a life-threatening condition, but a minor one. However, because acne is a matter of appearance, it affects the choice of marriage and employment, making it a recognized issue. In addition, acne is a small condition, but many people seek treatment for it. Acne is also known as acne vulgaris. In Volume 4 of “The Authentic Book of Surgery”, there is a cloud: “Lung wind, acne, rosacea, three of the same species, acne belongs to the lung.” Su Wen? Wang Bing said, “The internal residue of heat fries, depressed in the skin, is very acne boils.” All the descriptions are similar to modern acne. According to Chinese medicine, acne is mostly caused by heat in the lungs and stomach, which smolders on the face and stagnates blood heat. Modern medicine considers it to be a chronic inflammatory disease caused by the overproduction of sebaceous glands. The question is, why is acne more common in young men and women? Why does it occur on the face due to excessive sebum? If we look at Chinese medicine, we must think of the problem of excessive phase fire. The phase fire is the opposite of the king fire. The Su Wen? Tian Yuan Ji Da Lun (The Great Treatise on the Heavenly Elements) says: “Jun Huo is the brightest, and Xiang Huo is the most important.” Zhang Jinyue said, “The Jun fire is on top, and is the brightness of the sun, to show the way of heaven, so it is also in the heart of man, and the gods come out. The phase fire lives below, as the source of warmth, in order to produce and nourish all things, so in people also belong to the kidneys, and the Yang is stored.” The phase fire is the fire of life hidden in the kidneys, and the true yang in the kidneys is the driving force of the whole body, the source of life, and must be present, but not hyperactive. If we venture to think about it, this phase fire should be related to sex hormones. When the phase fire is delusional, it is similar to the high level of sex hormones. The author then thought that hyperactivity of the phase fire should be the root of acne, and that heat is the symptom of the disease. To lower the phase fire, Huang Bai and Zhi Mu should be used as the first choice, but for men and women, they should be treated separately. Based on the above ideas, for a large number of patients with stubborn acne, the author has adopted an approach that treats both the root cause and the symptoms. The root cause of acne is hyperactive sebaceous glands, which leads to excessive secretion of sebaceous glands and poor excretion of skin fat, resulting in blockage of the facial hairs where the sebaceous glands are most developed. In order to cure acne, it is crucial to control two aspects. The first is to reduce the secretion of subcutaneous oil, which is the root of the problem. For women, the famous formula “Siwu Tang”, which regulates menstruation by tonifying the liver and blood, should be the first choice for regulating female hormones. For men, Liu Wei Di Huang Tang is the main formula for tonifying kidney yin and may be useful for regulating male hormones. On this basis, it can be used in combination with Wu Wei Qing Poison Drink (formula in the Jin Jian of Medicine) and Baicalin Qing Lung Drink (formula in the Zheng Zong of Surgery). If the menstrual flow is low and uncomfortable, add Fragrant Herb and Motherwort; if the skin is oily, add Hawthorn, Lotus Leaf and Zeligia; if the stool is dry, add Shu Rhubarb; if the marks are hard and painful, add Safflower, Tao Ren and Tiger Balm. For local infection, redness, swelling and pain at the beginning, you can use sulfur soap, and then rub a little bit of Bactrim on the outside for three consecutive days to eliminate the incipient situation in the sprout. The author used the above method to treat acne, after years of clinical practice, the effect is indeed very good! It is worth noting that it must be adhered to for 1 to 2 months, because regulating hormone levels is a relatively long process. Of course, it is also important for patients to minimize the intake of greasy and animal foods.