Chinese medicine clinical research Disease name: In traditional Chinese medical writings, there is no disease name that corresponds exactly to CVA, there are related descriptions such as: “The Source of Diseases:” “A wind cough, want to speak because of coughing words can not be completed is also.” Su Wen? Cough Theory: “The five internal organs and six internal organs all cause coughing, not only the lungs.” “The skin and hair are first subject to evil, and the evil has been from its combination.” The Book of the Living Young Heart? Cough: “There are several types of coughs, but they are divided into cold, heat, and deficiency, and are solved according to the evidence. The book “The Cough of the Young? The cough is a persistent disease that cannot be removed.” Wind evil is the main factor in its treatment, with an irritating, spasmodic cough accompanied by itchy throat, itchy eyes and itchy nose, which is consistent with the characteristics of wind evil in its treatment. Although it is an asthma, it is rarely accompanied by asthma and is mainly a cough, so it can be classified as a “wind cough” in cough. Etiology: Wind, heat, and phlegm are combined to cause the disease, with wind being the main cause. In terms of etiology, “wind,” “heat,” and “phlegm” are emphasized, and it is believed that the internal cause is the deficiency of the lungs and spleen, and the phlegm is hidden inside, while the external cause is the feeling of wind. The cough is characterized by paroxysmal, sudden and recurrent attacks and is often accompanied by an itchy throat. Children’s bodies are pure yang, infantile yin has not yet grown, feel external evil, mostly from heat, although the external wind and cold, can also be quickly turned into heat, and children’s appetite for spicy, aromatic and thick-tasting products, easy to hurt yin into dryness, nourishing internal fire. Children’s spleen is often deficient, fluid transport and transformation failure, easy to gather dampness and phlegm, phlegm is a tangible yin evil, heavy and sticky, hidden inside, with the qi lift in and out, flow of internal organs and limbs meridians, blocking the circulation of qi and blood, sometimes hidden and sometimes ambiguous, so the disease is prone to recurrent attacks, the disease is an important pathological factor. Modern medical research shows that most of the children with CVA are allergic, often accompanied by allergic rhinitis, skin allergies, etc., which can be explained by the wind to cause the disease. The pathogenesis: “wind and phlegm paralysis, lung heat and Qi rebellion” is the most common. We believe that the onset of pediatric CVA is not only different from the general cough caused by the deficiency of the lung guard, but also different from asthma, in which the phlegm is trapped in the lungs. It is mostly due to the deficiency of the lung spleen causing phlegm to be internalized, and then due to the external wind, heat is internally transmitted, and the evil heat is depressed in the lung, resulting in wind and phlegm paralysis, internal congestion of lung heat, loss of lung circulation, and Qi rebellion. Although the wind comes from the external wind, it can be combined with phlegm to form an arena, which is difficult to remove quickly. The heat often comes from the outside to the inside, and the course of the disease is prolonged, with phlegm and turbidity intermingling and blocking the lung, which cannot be cleared overnight. The phlegm obstructs the airway, resulting in a loss of lung circulation and purification, with the lung losing its purification and descent. In addition, children with CVA are often attacked by external evil because of the deficiency of lung qi, so respiratory tract infection is the main cause of this disease. The basic treatment method: to understand the law and unify the formula with the law. The onset of pediatric CVA is not only different from the general cough caused by the deficiency of the lung guard, but also different from the asthma in which the phlegm is stored in the lungs. It is usually caused by a deficiency of the lung and spleen, resulting in phlegm and turbidity, and then by the internal transmission of heat due to external wind and heat, resulting in wind and phlegm paralysis, internal congestion of lung heat, loss of lung circulation, and upward rebellion of the Qi. The cough is characterized by paroxysmal, sudden and recurrent attacks and is often accompanied by an itchy throat. Children’s bodies are pure yang, infantile yin has not yet grown, feel external evil, mostly from heat, although the external wind and cold, can also be quickly turned into heat, and children are addicted to spicy, aromatic and thick-flavored products, easy to hurt yin and dry, nourishing internal fire. Children’s spleen is often deficient, fluid transport and transformation failure, easy to gather dampness and produce phlegm, phlegm is a tangible yin evil, heavy and sticky, hidden within the ambush, can rise and fall in and out with the qi, flowing through the internal organs and limbs meridians, blocking the circulation of qi and blood, sometimes hidden and sometimes ambiguous, so it becomes an important pathological factor that the disease is prone to recurrent attacks, the disease lingering. Based on the understanding of the etiology and pathogenesis of pediatric cough variant asthma and the characteristics of Chinese medicine and clinical experience in treating pediatric cough variant asthma, we have developed Huang Long Compound based on the basic treatment method of dispelling wind and relieving spasm, promoting lung and resolving phlegm, clearing Qi and lowering rebellion. The basic composition is: 6g of roasted ephedra, 9g of almonds, 9g of soursop, 9g of mulberry bark, 9g of Qianhu, 6g of dilong, 5g of cicada, and 6g of spineflower. The two medicines together can promote and reduce heat, relieve asthma and relieve spasm, so that the lung qi can be declared and unblocked, then the cough will be stopped and the asthma will be relieved. Almond is bitter and slightly warm, enters the lung and large intestine meridian, promotes the lung and lowering of Qi, stops coughing and resolves phlegm; suzi is pungent and warm, belongs to the lung and spleen meridian, benefits the lung and calms asthma, relieves coughing; mulberry bark is sweet and cold, enters the lung meridian, clears lung heat, stops coughing and calms asthma, this medicine is not dry and not rigid, although it relieves lung heat without harming the delicate organs. The bitter, pungent and slightly cold nature of Qian Hu, which belongs to the lung, spleen and liver meridians, is used to promote the lung and lower the qi, lowering the qi and resolving phlegm, all four are subject medicines. The almond and suzy with ephedra can strengthen the power of lowering the lung and promoting phlegm, so that the lung is clear and purified, the airway is unobstructed, the cough is relieved from the cough; the mulberry bark and Qian Hu can enhance the effect of clearing heat from the lung and relieving phlegm. It can lower qi, eliminate phlegm and stop rebelliousness. It can help to contain the rebellious lung qi and is an important medicine for treating choking cough; cicada is sweet and slightly cold in taste and enters the lung meridian, with the function of clearing heat and promoting the lung, dispelling wind and relieving spasm. It can also be combined with Dilong to disperse the wind evil that is fighting in the throat, airway and lung channels, thus relieving the irritating symptoms such as itching in the throat and airway. The combined use of all the medicines in this formula, with the combination of declaring and lowering, warming and moistening, and complementing each other, together clear heat and promote the lung, dispel wind and spasm, smooth the Qi and dissolve phlegm, and lower the rebellion to stop cough. This formula has been clinically proven to be clinically effective for many years!