Cough refers to the loss of lung circulation and lowering, the rebellion of lung qi, and the coughing up of sputum and saliva, which is one of the main symptoms of lung diseases. Cough with sound but no phlegm is a cough, while cough with phlegm but no sound is a cough. A cough caused by wind-phlegm congestion in the lungs is called wind-phlegm cough. It is a kind of cough that can be treated until the cough has been vomited up and the phlegm has come out of the diet, and the formula is less definite, because the liver and wood have overcome the spleen and earth and the wind and phlegm are congested.” [1] Phlegm is produced by the wind, the first offender of the lung system, which can be seen in the evidence of coughing and coughing phlegm, as described in the Secret Records of the Stone Room: phlegm disease “at the beginning, the wind, coughing and spitting is also.” [2] Wind-phlegm coughs, which are non-epidemiological, or coughs that do not heal after first having epidemiological evidence, are characterized by recurrent episodes of coughing and phlegm, sudden onset and sudden cessation, varying in severity, with clear, white and foamy phlegm, itching and discomfort in the throat, a feeling of mucus adhesion in the throat or shortness of breath, or a slight evil of wind and cold, a stuffy and runny nose, a pale lip and tongue, a thin white coating, and a floating and slippery pulse or a floating and slippery string. I. Characteristics of wind-driven illness The Six Books of the River? Cough Theory” says: “The six gases of cold, summer, dryness, humidity, wind and fire all cause cough.” [3] The wind is the first of the six malaise, the longest of all diseases, and other external evils are often attached to the wind and attack the human body, so the cause of external illness is often preceded by the wind, either with cold, heat, or dryness, manifesting as a combination of wind-cold, wind-heat, and wind-dryness. The wind evil has the characteristics of light and open, good movement does not live, mostly from the skin and hair muscle coup invasion of the body, so that the coup open, visible sweating, evil wind and other symptoms. The wind evil guest in the muscle surface, can be seen in the evil wind, fever and other surface evidence. If the wind evil disturbs the head and face, symptoms such as strong head and neck pain, oblique mouth and eyes can be seen. If the wind evil attacks the lung and the lung qi is not promoted, symptoms such as stuffy nose and runny nose, itchy throat and cough can be seen. The external wind is called the external wind, while the internal pathological changes in the body are called the internal wind. The external wind can lead to the internal wind, and the internal and external winds can be combined, or the wind evil does not disperse in prolonged illness, resulting in the wind invading the internal organs and intermingling with phlegm, making the cough lingering and difficult to cure. Second, the pathogenesis of wind-phlegm coughs Wind-phlegm coughs are respiratory pathological manifestations of both wind and phlegm evidence, and there are two cases: one is the production of phlegm due to wind, and the other is the onset of wind due to phlegm. The first is the production of phlegm from external wind and the second is the production of phlegm from internal wind. The production of phlegm from external wind is mostly caused by the external attack of wind, the loss of lung qi, the loss of regulation, the inability to disperse fluid, and the internal production of phlegm. The “symptoms due to pulse treatment” points out that “the cause of wind and phlegm, external wind evil, attacking the human muscular surface, bundle its internal fire, not allowed to vent, external evil spread inside, internal and external fumigation, then the wind and phlegm of the disease is carried forward.” [4] The internal wind produces phlegm, mostly because the liver wind moves within, and the phlegm is disturbed, resulting in paralysis of the airway and unfavorable breathing. Wind due to phlegm, more factors have phlegm turbidity, loss of warmth, up in the lungs. External wind with phlegm is mainly caused by the wind evil first. Internal wind and phlegm to the dysfunction of the internal organs as the main pathological basis, “Shou Shi Bao Yuan” has said: “phlegm, the name of the disease is also born in the spleen and stomach. However, the spleen and stomach gas, food is easy to grasp, what phlegm. Or after eating because of the exasperation of labor, fear of wind, to the essence of the diet can not be transmitted, and become phlegm drink.” [5] “Read medical essays” also cloud: “phlegm is no matter for dry phlegm, for wet phlegm, are due to the spleen qi deficiency, can not be healthy and become.” [6] The weakness of the spleen and stomach and the loss of the spleen’s healthy movement cause the liver qi to move the wind and produce phlegm. The treatment of wind-phlegm coughs is based on the distinction between external and internal injuries, and between wind-cold and wind-heat, and it is appropriate to dispel wind and resolve phlegm to stop coughing. Coughs”: “The evil of external sensation has a surplus, and if there is deficiency in the real, it is appropriate to supplement to disperse it; the disease of internal injury has a deficiency, and if the deficiency holds the real, it should also be cleared to moisten it.” [7] “Red Furnace and Snow? The cough caused by phlegm and fire says: “If the external evil causes a cough, the wind must start with a heavy nose, spontaneous sweating and vicious wind, which should be resolved. If the cough is cold, it must start with an evil cold and no sweat, and the sound is clear and strong, so the law should be dispersed. If the table evidence is heavy, but or headache fever, and when the sweat. …… If the cough of internal injuries, phlegm and fire are even in the early morning, the method should be to clear the phlegm and lower the fire. If the fire floats in the lungs, the cough is even in the evening, so the treatment is to clear the gold. The treatment is to eliminate the phlegm and lower the fire. [8] In treating wind-phlegm coughs, we should examine the causes and dialectical evidence, and use appropriate methods to remove wind and resolve phlegm. When phlegm is produced by external wind, it is usually caused by external wind and is accompanied by superficial evidence, so the treatment should be to dispel wind and resolve phlegm. Internal wind generates phlegm mostly due to internal movement of liver wind, phlegm disturbance or weakness of spleen and stomach, phlegm-damp wind. The treatment should be to quench the wind and resolve phlegm, and drugs to calm the liver and quench the wind or to strengthen the spleen and dispel dampness are often used in combination with phlegm-relieving drugs. Zhu Danxi in “Danxi Xinfa? Phlegm Disease”, it is stated that “for all wind-phlegm diseases, wind-phlegm medicines must be used.” [9] Wind-phlegm medicine refers to a class of phlegm-transforming drugs that also have the effect of dispelling wind and relieving symptoms, such as Qian Hu, Almond, Nan Xing, Radix Platycodon, Cicada, etc., which are suitable for coughs with external sensations and coughs with wind-phlegm at the beginning. Qian Hu is bitter, pungent and slightly cold, with the effect of lowering Qi and resolving phlegm, dispersing wind and clearing heat, which is good for treating cough and asthma caused by phlegm-heat blocking the lung and loss of lung circulation and purification. It can also be used for external symptoms, especially for cough with phlegm caused by external wind-heat. Almond is bitter, warm and moist, which can lower the lung qi, open the lungs and stop coughing and asthma, and can be used for coughing and asthma, regardless of newness, heat or cold, deficiency or reality, with or without external sensation. Tiannanxing is pungent, bitter and warm in nature, which can dry and dissolve phlegm and dampness, and is good for treating cold dampness and stubborn phlegm, cough and asthma, and stuffy chest. It can also be used with heat-clearing drugs to treat lung-heat cough. It is bitter, slightly pungent and cool in nature, with the effect of clearing heat and resolving phlegm, calming wind and calming fright, and is used for cough with phlegm and heat and cough with thick yellow sputum. It is good at opening and promoting lung qi and treating cough with phlegm and chest congestion, regardless of external and internal injuries, wind-cold and wind-heat. It also disperses the knots of lung qi and facilitates the stagnation in the chest, promoting the discharge of pus and phlegm from the lung by lifting and lowering the qi, regulating the qi and broadening the chest, and is an important medicine for expectorating and draining pus to treat pulmonary carbuncle. It also helps to open the pharynx and treat sore throat and loss of voice. Cicadelle is sweet in taste, cold in nature, light in quality and floating, long in dispersing wind-heat in the lung and cool in dispersing wind-heat in the liver, with the effect of promoting the lung and pharynx, relieving wind and relieving spasm, so it is especially suitable for wind-heat colds, the beginning of warm diseases, or wind-heat upward attack. Because of the obvious adverse effects of drugs commonly used to treat wind phlegm, such as Nanxing and Baihuizi, it is advisable to make pills and take them in small amounts frequently, and to pay attention to the protection of the spleen and stomach. [10] For cough with wind and phlegm, with symptoms such as itchy cough and throat, unpleasant cough and phlegm, or fever with slight wind and a thin white tongue coating, Medical Heart Enlightenment’s Stop Cough San (composition: Radix Platycodon grandiflorus, Radix Thornbush, Aster, Bupleurum, Bian Qian, Licorice, Chen Pi) plus reduction is preferred. This formula is light, clear and translucent, with the effect of relieving cough and resolving phlegm, draining wind and promoting lung, and is a general remedy for cough. It can be used to treat many kinds of coughs, but it is most suitable for coughs in which the superficial evil has been relieved and the wind has detained the lung. [11] Or add light and clear to open the lungs and disperse the wind of cicada, and with the function of expectorant wind and phlegm with the stiff silkworm, its effect is more obvious. [12] It is mostly used in modern times for upper respiratory tract infections, bronchitis, pneumonia, influenza and other evidence of wind evil offending the lung. In lung diseases such as cough and asthma, which are mostly caused by phlegm produced by external wind, the nature of wind-cold and wind-heat should be distinguished, and in cases with cold, the phlegm is white and clear with foam. Apricot-Su San (composition: Su Ye, Panax, Poria, Qian Hu, Bitter Radix Platycodon, Citrus Aurantium, Glycyrrhiza, Ginger, Jujube, Orange Peel, Almond) is used to lightly promote coolness and dryness, and regulate the lung and resolve phlegm, which is suitable for wind-cold coughs with vicious cold without sweating, thin cough and phlegm, dry throat, and stringy pulse. In modern times, it is often used for those with mild wind-cold and internal obstruction of phlegm and dampness. Xiao Qing Long Tang (composition: ephedra, peony, ginger, wu wei zi, licorice, cinnamon stick, half-xia, and hsiang xin) is used to disperse cold and warm the lung and remove drinks. It is mainly used for chronic bronchitis, bronchial asthma, senile emphysema, and acute attack of chronic bronchitis, pneumonia, emphysema, allergic rhinitis and other diseases with external cold and internal drinking. San Wou Tang (Composition: Ephedra, Almond, Licorice) is used in cases of cold and wind, with symptoms of nasal congestion, body heaviness, inability to speak, or wind and cold, headache and dizziness, limb constriction, cough with phlegm, chest fullness and shortness of breath. (Composition: Ginseng, Su Ye, Pueraria Mirifica, Qian Hu, Radix Panax, Poria, Chen Pi, Glycyrrhiza Glabra, Citrus Aurantium, Mucuna Pruriens) is used for relieving the symptoms of external wind and fever, headache and nasal congestion, cough with phlegm, chest and diaphragm fullness, white fur and floating pulse, especially for the weak and old with external wind and cold and internal phlegm. Dampness. In cases of wind phlegm with heat, the phlegm turns from clear and thin to white and sticky, still with foam. The treatment should be to remove wind and heat, promote the lung and promote phlegm, with pungent and cool medicines, such as mulberry leaf and forsythia, etc. The formula is mulberry chrysanthemum and piperine soup, jing-fang sweet orange soup, jing-fang diarrhea and white powder, and bamboo lei paste, etc. Mulberry, Chrysanthemum, Mulberry leaf, Guadua peel, Radix Platycodon, Chuanbei mother, Rutabaga root, Almond, Glycyrrhiza glabra, Scutellaria baicalensis, Forsythia forsythia, Hai Fushi, Chai Hu, Peppermint) and Jing Fang Gan Mandarin Tang (composition: Thornbush, Fanfeng, Radix Platycodon, Glycyrrhiza glabra, Peppermint) are suitable for the evidence of wind-heat with phlegm. Jing Fang Diabao Bai San (composition: Thorny Mustard, Fang Feng, Mulberry Bark, Ground Bone Peel, Licorice) is especially suitable for those with wind-heat entering the lung, lung wind, phlegm and asthma, and floating pulse. In cases of wind-heat cough with cough, yellow and sticky sputum, sore throat, dry mouth and tongue, shortness of breath and chest tightness, the formula should be selected from “Introduction to Medicine” (Composition: Bamboo Leach) with addition and subtraction. If internal wind generates phlegm, the cause of internal wind should be identified. If external wind induces internal wind and phlegm flows through the meridians, it is advisable to dispel wind and expel phlegm, pass through the meridians and stop spasm, and the formula should be selected from Zhanzheng San. For internal wind and phlegm congestion, Qianlin Tang, Cinnabar and Phlegm Pill and Boiled Golden Flower Pill are recommended. Yang’s Family Collection Formula (composition: Baihuizi, Baijijian, Quanscorpion) is suitable for those with wind-phlegm obstruction of the ligament, who see sudden mouth-eye Z obliquity, pale tongue with white coating, and in modern times also for those with whooping cough and other evidence of wind-phlegm obstruction of the ligament. It is also used in modern times in cases of pertussis and other symptoms of wind-phlegm obstruction. The formula in Volume 6 of “Women’s Complete Good Formulas” is applicable to those with wind-phlegm congestion and shortness of breath, who cannot lie down day and night, and who are supported to sit. Cinnabar and Phlegm Pill (composition: kulan, cinnabar, tiannanxing, half-xia, ginger) is used in cases of wind and phlegm congestion, blocking the clear orifices, resulting in epilepsy, such as wind and phlegm cough, epilepsy, head and eyes confusion, pharynx and diaphragm discomfort, and boredom. Jie Gu Jia Zhen” Boiled Golden Flower Pill (composition: Sheng Nan Xing, Sheng Han Xia, Tian Ma, Xiong Huang, Sheng Jiang Ju) is used for symptoms of internal congestion of wind and phlegm, such as cough, fullness and stuffiness of the limbs, constipation, blue face, agitation and anger, and stringent pulse. It is recommended that the formula for removing wind and phlegm should be light in quality and small in quantity, and should not be decocted for a long time, so as not to lose the efficacy of promoting permeability and dispersal. When choosing clinical prescriptions, we should fully consider the characteristics of the disease, evidence and symptoms and their interrelationship, select the medicine according to the disease, match the medicine according to the evidence, use the medicine according to the disease, and adopt the appropriate decoction method in order to receive good therapeutic effects.