Traditional Chinese medicine believes that the delicate spirit of the lungs is "the dirty of the canopy." At present, it is the "eventful spring" of the lungs, especially the elderly, with weak constitution and low immunity. A little carelessness can easily induce respiratory diseases such as cough. Cough at night is particularly distressing, which affects sleep lightly and is life-threatening. Cough at night is often complicated, not as simple as a common cold cough. Yin deficiency and lung dryness are the culprit, Ms. Zhou, who is nearly 30 years old. In the past two years, she often coughs at night, with yellow phlegm that is not easy to spit out, dry throat, thirst and tooth marks on her tongue. In these two months, Ms. Zhou's cough worsened, which affected her sleep and had to go to the hospital. In life, patients like Ms. Zhou are very common. Ms. Zhou belongs to yin deficiency constitution, and the climate is dry, which leads to lung dryness and yin deficiency. Chinese medicine believes that the sun belongs to the sun, the night belongs to the yin, and heaven and man correspond. At night, the human body should be full of yin, but the patient's lungs are dry and yin deficiency, and the lungs are not declared, so he coughs. Treatment should be based on nourishing yin and moistening lung, resolving phlegm and relieving cough. The formula is as follows: 3 g of American ginseng, 0/0g of Radix Glehniae/kloc-,0/0g of Ophiopogon japonicus, 0/0g of Schisandra chinensis/kloc-,0/0g of Platycodon grandiflorum/kloc-,0/0g of sweet almond/kloc-,0/0g of Bulbus Fritillariae Cirrhosae, and 0/0g of Fructus Aurantii. Compound Chuanbeijing Tablet has the functions of dispersing lung qi, resolving phlegm, relieving cough and asthma. Ephedra in the prescription is hard, warm, pungent and warm, relieving exterior cold evil, suffering from lung qi, dispersing lung qi, relieving cough and asthma, and is king. Pericarpium Citri Tangerinae, Rhizoma Pinelliae, Cortex et Radix Polygalae and Radix Platycodi have the effects of dispersing lung qi, eliminating dampness and resolving phlegm, and they are all minister drugs. Fritillaria cirrhosa has the function of moistening lung and resolving phlegm, which can help ministers take medicine and restrict the nature of Mahuangxin powder. Schisandra astringe the lung to relieve cough, and all kinds of drugs are blended into medicine. Clinically, it is mostly used for cold cough such as acute and chronic bronchitis and bronchiectasis, with symptoms such as cough, asthma, chest tightness and excessive phlegm. In the dry season, you should eat more nourishing products such as pears, sugar cane, medlar, grapes, tremella, duck meat, fish and vegetables, and should not eat more spicy peppers and mutton. Cough at night caused by lung dryness and yin deficiency is easy to treat, but if there is blood in sputum, it should be highly vigilant and need to go to the hospital for examination in time to rule out tuberculosis. Phlegm dampness blocking the lung is also to blame. Mr. Zhang is 56 years old and has a history of coronary heart disease. In recent days, I have had paroxysmal cough at night, vomited white foam sputum, accompanied by chest tightness and dyspnea, and just sat up. This is because there is something wrong with the spleen, and phlegm is endogenous and hidden in the lungs, leading to cough. The patient's cough is aggravated by the change of posture, suggesting left heart failure. The treatment should be eliminating dampness and phlegm, regulating qi and relieving cough. The treatment was Erchen Decoction combined with Sanzi Yangqin Decoction and Tongxuan Lifei Tablet. Tongxuanlifei tablet prescription is derived from the addition and subtraction of "Shensuyin" in Taiping Huimin Hejiju Prescription in Song Dynasty, which has the functions of relieving exterior syndrome, dispelling cold, dispersing lung and relieving cough. Perilla frutescens and ephedra warm heart powder have the functions of expelling wind and cold, sweating and relieving exterior syndrome, dispersing lung and relieving asthma, and are monarch drugs. Peucedanum and bitter almond reduce qi, resolve phlegm and relieve asthma; Platycodon grandiflorum dispersing lung, resolving phlegm and relieving sore throat, combining the three medicines, and restoring lung and descending; Pericarpium Citri Tangerinae and Rhizoma Pinelliae are used for eliminating dampness and resolving phlegm; Poria cocos is the source of phlegm and the minister medicine. Scutellaria baicalensis Georgi can clear lung heat, so as to prevent exogenous pathogenic factors from stagnation and heat transformation, and prevent ephedra and Pinellia ternata from being too dry at the same temperature; Fructus Aurantii regulates qi, eliminates phlegm and produces fluid, and * * * is an adjuvant medicine. Glycyrrhiza uralensis Fisch can eliminate phlegm and relieve cough, and harmonize various medicines. Can be used for treating common cold, cough, fever, aversion to cold, stuffy nose and runny nose, headache, anhidrosis and limb pain. Phlegm dampness blocking lung is also a common cause of cough at night. Traditional Chinese medicine believes that the lung is the source of phlegm and the spleen is the source of phlegm. At night, the sputum in the lungs can't be spit out in time because of sleep, and it will cause cough if it accumulates to a certain extent. This cough also occurs during the day, but it is more serious at night. Western medicine believes that cor pulmonale caused by chronic bronchitis, bronchiectasis, lung abscess and chronic left ventricular dysfunction will be life-threatening if not treated in time. When the primary disease is cured, the cough at night will naturally disappear. Such patients should not eat pears, bananas, fat and other things that help damp and produce phlegm. Cough at night is different from common cold cough, so we should treat both the symptoms and root causes according to the cause. For sudden and irritating severe cough that appears irregularly day and night, we should consider the possibility of respiratory malignant tumor and see a doctor in time to avoid delaying the treatment opportunity.