At the beginning of spring and summer, the weather is hot and cold, and the number of patients with cold-induced coughs has increased significantly in our hospital recently. Some time ago, Zhang had a cold after catching a cold, and he had been carrying on without taking any medicine. He thought that colds are self-limiting and can usually be relieved gradually. But to his surprise, a cough appeared a few days later and was delayed for several weeks, seriously affecting his work and life. A seemingly simple cold and cough is actually not as good as we think it is. There are countless real-life examples around us of people who have a cold and cough, or who are on the verge of a major disaster, from community clinics to large hospitals, asking for “water” and antibacterial agents as soon as they come up; or who don’t take it seriously and delay it as long as they can; or who just go to the pharmacy and buy some “cough medicine or just buy some “cough medicine” from the pharmacy; or just believe in the so-called prescriptions. However, some of them are difficult to cure for a long time, and the course of the disease is as short as a few weeks or as long as half a year, and they are transferred to various examination rooms and spend a high amount of medical expenses, but their condition remains the same. In addition to the lack of knowledge about the prevention and treatment of cold and cough, random treatment is also one of the reasons that cannot be ignored. Coughing is a defensive reflex that occurs when the respiratory system is stimulated. Post-cold cough is a very common subacute cough, also known as spring and summer, when the weather is hot and cold, and there has been a significant increase in the number of patients with post-cold cough caused by cold in our hospital recently. Some time ago, Zhang had a cold after catching a cold, and he had been carrying on without taking any medicine. He thought that colds are self-limiting and can usually be relieved gradually. But to his surprise, a cough appeared a few days later and was delayed for several weeks, seriously affecting his work and life. A seemingly simple cold and cough is actually not as good as we think it is. There are countless real-life examples around us of people who have a cold and cough, or who are on the verge of a major disaster, from community clinics to large hospitals, asking for “water” and antibacterial agents as soon as they come up; or who don’t take it seriously and delay it as long as they can; or who just go to the pharmacy and buy some “cough medicine or just buy some “cough medicine” from the pharmacy; or just believe in the so-called prescriptions. However, some of them are difficult to cure for a long time, and the course of the disease is as short as a few weeks or as long as half a year, and they are transferred to various examination rooms and spend a high amount of medical expenses, but their condition remains the same. In addition to the lack of knowledge about the prevention and treatment of cold and cough, random treatment is also one of the reasons that cannot be ignored. Coughing is a defensive reflex that occurs when the respiratory system is stimulated. Post-cold cough is a very common subacute cough, also known as post-infection cough, which refers to recurrent coughing within the third to eighth week after an upper respiratory tract infection, with no significant abnormalities on X-ray chest examination and other diseases excluded. A cough without sputum or with very little sputum is called a dry cough (dry cough). When dry cough symptoms appear, people often use many cough suppressants and even antibiotics, but the effect is not always good. In fact, there are many causes of dry cough and no sputum, such as chronic nasopharyngitis, cough variant asthma, and gastroesophageal reflux cough. To standardize the treatment of post-cold cough, it is important to distinguish the nature of the cough. Generally speaking, cough is caused by wind and cold, such as rain and cold, and is characterized by incessant coughing, high sputum production, white and thin sputum like foam, accompanied by fear of cold and increased coughing in case of cold, which is mostly a cold cough. In the treatment of coughs, drugs that are warm in nature and have the effect of dispersing cold and promoting the lung, resolving phlegm and relieving coughs should be used. If the cough is not obviously related to cold, but is paroxysmal, with a small amount of yellow sputum, accompanied by a sore throat and dry mouth, it is mostly a hot cough, and should be treated with drugs that are cold in nature and have the effect of clearing heat and resolving phlegm to stop coughing. It must be noted that there are differences between Chinese and Western medicine in the treatment of acute or subacute coughs. First, not all post-cold coughs must be treated with antimicrobial agents because they are ineffective against viral infections, and appropriate antibiotics should be used only when there is evidence of a combination of bacterial infections; second, Western medicine is basically antagonistic, suppressive and cough suppressant, while Chinese medicine is relatively situational (upward and outward), repulsive (to dispel evil) and unobstructed (to promote the lungs). Third, be careful with cough suppressants. This type of medicine can “calm” the cough for a while, but obviously cannot remove the root of the disease. In contrast, Chinese medicine emphasizes the importance of clearing the airways, promoting the lungs and resolving phlegm to stop coughing, so that both the symptoms and the root cause can be truly treated. Post-infection cough refers to a cough that does not resolve repeatedly within the third to eighth week after an upper respiratory tract infection, without obvious abnormalities on X-ray chest examination, and excluding cough caused by other diseases. A cough without sputum or with very little sputum is called a dry cough (dry cough). When dry cough symptoms appear, people often use many cough suppressants and even antibiotics, but the effect is not always good. In fact, there are many causes of dry cough and no sputum, such as chronic nasopharyngitis, cough variant asthma, and gastroesophageal reflux cough. To standardize the treatment of post-cold cough, it is important to distinguish the nature of the cough. Generally speaking, cough is caused by wind and cold, such as rain and cold, and is characterized by incessant coughing, high sputum production, white and thin sputum like foam, accompanied by fear of cold and increased coughing in case of cold, which is mostly a cold cough. In the treatment of coughs, drugs that are warm in nature and have the effect of dispersing cold and promoting the lung, resolving phlegm and relieving coughs should be used. If the cough is not obviously related to cold, but is paroxysmal, with a small amount of yellow sputum, accompanied by a sore throat and dry mouth, it is mostly a hot cough, and should be treated with drugs that are cold in nature and have the effect of clearing heat and resolving phlegm to stop coughing. It must be noted that there are differences between Chinese and Western medicine in the treatment of acute or subacute coughs. First, not all post-cold coughs must be treated with antimicrobial agents because they are ineffective against viral infections, and appropriate antibiotics should be used only when there is evidence of a combination of bacterial infections; second, Western medicine is basically antagonistic, suppressive and cough suppressant, while Chinese medicine is relatively situational (upward and outward), repulsive (to dispel evil) and unobstructed (to promote the lungs). Third, be careful with cough suppressants. This type of medicine can “calm” the cough for a while, but obviously cannot remove the root of the disease. In contrast, Chinese medicine emphasizes the need to clear the airway, to promote the lung and resolve phlegm to stop coughing, so as to truly achieve “both the symptoms and the root cause”.