Puffing sounds in infants may be a normal phenomenon due to underdevelopment of the laryngeal cartilage, or it may be caused by diseases such as bronchitis, asthma, and other diseases such as dyspepsia. 1. Laryngeal cartilage is not fully developed: babies may make huffing and puffing sounds because the laryngeal cartilage is not fully developed, and babies may experience wheezing, which is a normal phenomenon. 2. Bronchitis: Bronchitis is mainly due to viral, bacterial and other pathogenic infections, the main symptoms of the child is coughing, coughing up sputum, wheezing, rales in both lungs, etc., and there will be fever, headache and other symptoms, when there is a bronchitis, there will be a huffing and puffing sound. 3. asthma: asthma is mainly due to genetic and environmental factors, the child will appear wheezing, shortness of breath, chest tightness, coughing and other symptoms, but also nasal congestion, sneezing, fever and other symptoms. When the child develops asthma, it will also be through the sound of huffing and puffing. 4. Other: Acute laryngitis and other diseases can also cause the child to make huffing and puffing sounds. There may be other reasons for the sound of whimpering in infants, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.