Children's lung-heat cough is a symptom mainly caused by wind-heat pathogen invading the lungs, or wind-cold turns into heat, and evil heat accumulates in the lungs, and the lungs are burned by heat and toxin, which leads to stagnation of heat in the lungs and loss of lung qi. It often appears after lung-heat colds and no cold symptoms. The main clinical manifestations of lung heat cough are repeated cough and yellow phlegm, accompanied by symptoms such as dry mouth, sore throat, constipation, red urine, body heat or wheezing, red tongue, thin yellow or greasy fur, scanty fluid, and slippery or thready pulse. Lung-heat cough is often seen in children with low immunity, mainly manifested as repeated cough. It can be treated with commonly used Chinese patent medicines such as Xiaoer Feire Kechuan Oral Liquid. Daily care of children with lung heat and cough (1) Keep the indoor air fresh, open the window frequently and strengthen air disinfection. (2) Do a good job in disinfection of sputum and sputum utensils. (3) Pay attention to oral cleaning and rinse your mouth after expectoration. (4) According to the location of the focus, pat the back with a hollow palm or position for drainage, so that the sputum can be discharged smoothly. (5) When the phlegm is sticky and difficult to cough up, you can take bamboo drain water orally according to the doctor's advice to resolve phlegm. Misunderstanding in the treatment of children's lung-heat cough 1) If antitussive and expectorant drugs are used to treat lung-heat cough, symptoms can only be temporarily suppressed, and the goal of curing the disease cannot be achieved, and a large number of antibiotics can be abused. Antibacterials have an effect on bacterial colds, but they have no power on viral colds. The vast majority of colds are caused by viruses, and taking antibacterial drugs not only has no effect on viral colds, but also leads to drug resistance. 2) Multiple drugs are used in combination. Many parents always look after their children badly, so they will choose to use multiple drugs in combination. In fact, the combined use of multiple drugs will lead to overdose and more toxic and side effects. Children with lung heat cough can choose one as long as it is symptomatic. Pediatric lung heat kechuan oral liquid is commonly used in clinic, which is a professional medicine for clearing lung heat, relieving cough and resolving phlegm for children. One of its main components, Glycyrrhiza uralensis Fisch, can replenish spleen and qi, relieve cough and moisten lung, detoxify urgently and reconcile hundreds of medicines. Modern pharmacological studies have found that Glycyrrhiza uralensis Fisch can promote the secretion of pharyngeal and bronchial mucosa, making it easy to cough up after dilution of concentrated sputum. 3) Cough is a clinical symptom, which can be seen in many diseases. If the self-purchased medicine is ineffective for three days, or the cough is aggravated, fever, chest pain, hemoptysis and other phenomena occur during the medication, you should go to a regular hospital in time, and you should not blindly change the medicine or increase the dosage yourself. 4) Lung-heat cough should be distinguished from wind-cold cough. Wind-cold cough is mainly manifested as cough and expectoration, thin and white sputum, itchy throat, frequent nasal congestion, runny nose, frequent sneezing, aversion to cold and headache, sore limbs, thin and white tongue coating, tight pulse, runny nose, or fever. There are many misunderstandings about medication for children with lung heat cough, so parents must pay attention to avoid the harm caused by medication errors.