Pediatric cough is a symptom, a protective reflex action, through the cough to foreign bodies, irritating gases, respiratory secretions and other substances that irritate the mucous membranes of the respiratory tract to clear out, coughing is often accompanied by sputum. Pediatric cough can be caused by a variety of diseases and needs to be carefully identified. It is most commonly seen in preschool children <5 years of age. Respiratory infections and post-infectious cough: Respiratory infections caused by many pathogenic microorganisms such as Mycobacterium pertussis, Mycobacterium tuberculosis, viruses (especially respiratory syncytial virus, parainfluenza virus, and cytomegalovirus), Mycoplasma pneumoniae, and Chlamydia are common causes of chronic cough in children. Baby drowsiness, runny nose, sometimes accompanied by fever, body temperature does not exceed 38 ℃; poor spirit, loss of appetite, sweating to reduce fever, the symptoms disappear, the cough still lasts 3-5 days. Acute respiratory infectious disease caused by Bordetella pertussis (Bordetella pertussis). It is characterized by paroxysmal spasmodic cough and chicken-like inspiratory roar. The course of the disease can be as long as 2 to 3 months, so the name pertussis. Bronchitis-induced cough: Bronchitis usually follows a cold and is caused by a bacterial infection. The cough is phlegmaceous, sometimes violent, and is usually more frequent at night with a coughing sound. The cough is at its worst two hours after the child goes to sleep, or around 6 am. Coughs caused by laryngitis are hoarse, with pus and phlegm, and little is coughed up, mostly swallowed. Older babies will complain of sore throat, and babies who can't express themselves often show irritability, refuse to feed, and make "empty, empty" sounds when coughing. Allergic cough: persistent or recurrent episodes of severe cough, mostly paroxysmal episodes, more pronounced in the morning, the baby's activities or crying cough aggravated, the child loves to sneeze when encountering cold air, coughing, but sputum is very little. Cough at night is more serious than during the day, coughing for a long time, usually lasts for 3 months, to pollen season more. Inhalation of foreign body triggered choking cough: If the child did not have previous symptoms such as cough, runny nose, sneezing or fever, and suddenly appeared violent choking cough, at the same time appeared difficult to breathe, the face is not good, especially smaller children, it may be in the adult did not pay attention to some kind of foreign body into the mouth, accidentally accidentally into the throat or trachea. Upper respiratory tract infection caused by cough cough: upper respiratory tract infection when the child's nasal mucosa has been inflamed, such as inhaling dry air will make the nasal cavity more uncomfortable, and will also aggravate the cough. Therefore, to keep the room air moist, you can use a humidifier, hanging wet towels, water mopping floor or put a pot of water in the room to increase air humidity. If your child's cough and nasal congestion persist for a week without improvement, you should take your child to a doctor as soon as possible. Bronchitis caused by cough stop cough: should go to the hospital for treatment, take the doctor prescribed pediatric cough medication, the child can not eat too sweet or salty food, otherwise it will exacerbate the night cough. Cough caused by laryngitis: in this case, parents should not solve the problem at home by themselves, and should consult a doctor for a clear diagnosis and symptomatic treatment. Allergic cough stop cough: pay attention to usually try not to let the child cold, should go to the hospital to consult the doctor. The family has a history of asthma and other allergic diseases of the baby, coughing should pay extra attention to early medical consultation, a clear diagnosis, active treatment, to stop the development of asthma. Inhalation of foreign objects triggered choking cough: inhalation of foreign objects parents to encourage children to cough, do not use their hands in their mouths to pick, in order to prevent the more foreign objects deeper and deeper picking, so that the airway completely blocked. If there is no coughing out of things, the child repeated coughing or shortness of breath, indicating that the foreign body has reached the lower respiratory tract, should immediately send the child to the hospital to remove the foreign body in a timely manner.