Newborn 15 days shortness of breath with huffing and puffing, may be related to colds, gastroesophageal reflux, laryngeal cartilage insufficiency, etc., need to be treated according to the specific causes. 1. Colds: If a newborn suffers from a cold, the nasal cavity is blocked by secretions, resulting in poor breathing, there will be shortness of breath and puffing, you can apply hot compresses to the root of the nose or massage the root of the nose properly, to promote blood circulation and relieve the occlusion, if accompanied by mental instability, coughing, fever and other symptoms, you need to go to the hospital in a timely manner. 2. Gastroesophageal reflux: the newborn’s stomach is not well developed, the cardia is loose, it is easy to reflux through the esophagus after eating milk, resulting in shortness of breath and puffing, you can hold the child upright after eating milk and pat the back, so that the child will swallow the milk completely to reduce choking. 3. Laryngeal cartilage underdevelopment: newborns are small and have underdeveloped laryngeal cartilage, which may result in shortness of breath and giggling, which generally does not require special treatment and will gradually improve as the child develops and grows. Newborns 15 days shortness of breath with huffing and puffing, it is recommended to go to the hospital in time for examination, to clarify the cause, active treatment, to avoid affecting the child’s growth and development.