Pediatric asthma is caused by a viral infection of the respiratory tract. The initial symptoms of asthma are not obvious and can easily be mistaken for some typical cold symptoms. Depending on the severity of the child’s condition, the symptoms may vary significantly. Initially, the symptoms may include itchy nose, runny nose and other allergic symptoms, chest discomfort with croup, dry cough with white mucus-like sputum, shortness of breath, chest tightness, cold sweats, etc. The child may gradually become more irritable, and signs of emphysema, such as barrel-shaped chest, may appear. The respiratory rate will become higher, and there will be difficulty breathing, open-mouth breathing, and nasal flapping. It is important to provide your baby with adequate nutrition, increase protein intake, eat more vegetables and fruits to ensure balanced nutrition. Enhance physical exercise, participate in more outdoor activities, and breathe fresh air, which can exercise the function of the lungs. When the weather changes, increase or decrease clothing in a timely manner, pay attention to keeping your child warm to avoid upper respiratory tract infections caused by alternating hot and cold. It is important to keep the indoor air good and avoid dry air. Pediatric asthma can be treated with a combination of controlled and relieving medications, and most of them will recover if they persist for a long time and receive regular and systematic treatment.