1. Theoretical connection between the lung and the large intestine

　　1. Theoretical connection between traditional Chinese medicine

　　 First, the relationship between the lung and the large intestine through the meridians of the meridians constitutes the relationship between the surface and the inside . "Lingshu Meridian" cloud: "Lung Taiyin Meridian, starting from the middle focus, lowering the large intestine..." This is the direct connection between the lung and the large intestine. In addition, the lung and the large intestine are closely related physiologically. The main lung is provoked, and the large intestine is moistened. The main descending of the lung is the power of the large intestine conduction. Lungs dominate the qi, breathe through the lungs, disperse the clear air throughout the body, the internal organs; remove the turbid gas from the body. Exhalation is the main way to eliminate turbidity; in addition, the outer lungs are covered with fur, and the air is dissipated through the valve to regulate breathing. At the same time, the turbidity (sagittal) is also eliminated through the large intestine conduction transfusion. The lungs are the source of water, and the water channel is regulated to participate in the metabolism of water and liquid. At the same time, the large intestine also participates in the metabolism of water and liquid, which can absorb the water in the large intestine and make the stool form. In addition, the lung and the large intestine affect each other pathologically. If the lung heat is strong, the large intestine is prone to dryness; if there is insufficient lung yin, then the bowel is constipated; the lung gas is insufficient, and the large intestine is deficiencies; General tone, large bowel diarrhea; large intestine solid heat secretion, unfavorable lung gas and fullness of asthma and cough. Therefore, the relationship between the surface of the lung and the large intestine contains three layers of meaning, the interaction and influence of the meridian, physiology, and pathology of the meridians.

　　 2. Research on modern mechanism

　　2.1. From the perspective of embryonic development

　　The lungs and trachea develop from the intestine of the intestine, and the respiratory tract epithelium And glands are differentiated from gastrointestinal endoderm. The source of the structure of the lung, trachea and intestine is the same, which may become the structural basis of the theory that the lung and the large intestine are in the surface.

　　2.2 From the way of gas excretion

　　The gas in the gastrointestinal tract is mainly absorbed by the blood circulation of the intestinal wall and discharged by the lungs. The amount of intestinal gas absorbed by the blood circulation in the intestinal wall and then discharged by the lungs is more than 20 times higher than the amount excreted by the anus. For example, when the function of lung gas excretion is impaired due to diseases such as pneumonia or bronchial asthma, gas excretion of the gastrointestinal tract is also affected, causing abdominal distension. At this time, if you pass through the bowel, defecate and expel gas, the intestinal air pressure will be reduced, which is not only beneficial to the recovery of intestinal tissue and function, but also can reduce the burden of the lung ventilator, indirectly improve the microcirculation and lung function, and promote the focus Clear.

　　2.3 From the role of intestinal endotoxin

　　Large intestinal stasis and other pathological conditions can cause the bacteria and toxins in the intestinal cavity to multiply and increase and absorb into the blood , Causing lung damage through intestinal endotoxin. It has been reported that intravenous injection of large doses of endotoxin in rats can cause acute lung injury. From the perspective of anatomy and physiology, enterogenous endotoxin returns to the right atrium through the inferior vena cava, and reaches the lungs first through the pulmonary arteries and capillaries, and then perfuses through the left atrium and arteries to other organs, so the lungs are affected by endotoxin Larger.

　　2.4 From the perspective of the public mucosal immune system

　　 Both the mucosa of the gastrointestinal tract and the respiratory tract are part of the public mucosal immune system, when a mucosal lesion occurs , Can affect another place through mucosal immunity.

　　Second, clinical application of lung and large intestine

　　In clinical application, according to the theory of "lung and large intestine phase", it can be basically summarized as treatment of viscera, Three methods of treatment of internal organs, internal organs and internal organs.

　　1. Treatment of visceral diseases

　　In clinical treatment of 30 cases of pulmonary heart disease, Xiaoqinglong decoction, Maxingshigan decoction, Maiweidihuang decoction and Zengye decoction were added or subtracted With the symptomatic treatment of Western medicine, all cases were effective, 25 cases were markedly effective, and 5 cases improved. It is also believed that due to the loss of lungs during the asthma attack, the dysfunction of the large intestine conduction function leads to intestinal dysfunction, and the intestinal stagnation also causes Yangming turbid gas to rise, which in turn affects the depression of the lungs and exacerbates asthma. Therefore, the Tongfu method is used to treat asthma during the attack period, the Fuqi can be ventilated, the Qi disorder can be calmed, and the stagnation of phlegm can be diarrhea, which is conducive to the recovery of the Xuansu function of the lung. Xie Bangjun''s rectal infusion of Jiawei Xuanbai Chengqi Decoction for the treatment of phlegm-heat intestinal pulmonary encephalopathy. Rectal medicine is delivered to the lungs through the meridians, and the lungs are directed towards the veins. Qi Su, open mind, phlegm and heat removal.

　　2. Fufu treats viscera

　　I think that habitual constipation is caused by the stagnation of Qi and the slow movement of the large intestine. You can start by adjusting the lung Qi machine to adjust the large intestine Qi machine, so that the function of Xuan Su of the lung gas can be restored; the function of the large intestine can be restored to normal. That is to say, the lifting method of lifting the lid by traditional Chinese medicine, using this method to treat the habitual constipation clinically has obtained good results. The habitual constipation of the elderly is caused by the deficiency of lung qi, and the treatment is mainly to supplement the lung qi to promote the peristalsis function of the large intestine, and the qi and foot can be passed. Chen Peiqiong believes that the depression of the lung is closely related to the conduction of the large intestine. The lung is the source of water, and the metabolism of water depends on the gasification of the kidney. Xuanfei Jiangqi and Yishen Laxative Method are very effective in treating senile constipation.

　　3. Combined treatment of viscera

　　In the treatment of patients with pneumonia and high fever and constipation, I adopt the method of Xuan Shang Tong Xia, Xuan Shang Tong Qi, Xuan Tong Qi, Fu Qi downward; vice versa The unobstructed qi is conducive to ventilating the lungs and has the effect of being paid at the bottom of the kettle. In the treatment of patients with pneumothorax and constipation, closed drainage of the thoracic cavity is very important, and more importantly, it is necessary to keep the stool smooth, so as to avoid excessive force during defecation and recurrence of the pneumothorax. It is inevitable to tell patients to eat more fruits and vegetables after leaving the hospital to keep their stools smooth. Another example is phlegm-heat obstructing lungs, which is caused by stagnation and loss of the bowel, which often causes constipation in the intestine. The conduction is not smooth and the stagnation does not go away. The heat accumulates and causes abdominal distension. , The formation of a vicious circle is a cause and effect of each other, so it should be treated with lung and intestine. From the above clinical practice, the pathological relationship between lung and large intestine is demonstrated.

　　 III. Discussion

　　The metabolism of the human body is realized by the gasification function of the internal organs, and the movement of movement in and out is the specific manifestation of the gasification function. , The hub is in the spleen and stomach, but all are governed by the lungs. The lungs are subdued, the qi is in the heart, the air of the six organs is unobstructed, and the dross is transferred to realize the function of the “conducting official of the large intestine, which changes out of the way”; in the same way, the normal conduction function of the large intestine contributes to the reduction of the lungs , The two physiology and pathology are closely related. Therefore, from the above Chinese and Western medicine theories and clinical practice, it has fully confirmed the scientific nature and practicality of the traditional Chinese medicine theory of "lung and large intestine".