Infant runny nose is seen in environmental factors, respiratory infections, etc., there is no most effective treatment, need to choose the appropriate method according to the cause, such as adjusting the indoor temperature, sea salt water nasal spray and so on. 1. Environmental factors: such as indoor ambient temperature is too low or the baby wearing too little, coupled with the baby’s young, the nasal mucosa is easy to congestion and edema, runny nose symptoms, need to regulate the indoor attention to warmth, increase clothing, the above symptoms can be gradually relieved. 2. Respiratory tract infections: such as acute upper respiratory tract infections, often caused by viral infections, such as rhinovirus, respiratory syncytial virus infections, the above symptoms can occur. Need to use local physiological sea saline for nasal spray, with cotton swabs to gently clean out the secretion, but also for hot compresses, larger infants, such as more than 6 months of age can be used under the guidance of the physician pediatric black cohosh and clearing the heat particles, the runny has a certain effect on the relief. 3. Allergic rhinitis: the above symptoms can occur, the need to use local sea saline nasal spray, with the age of increasing (such as more than 2 years old), if necessary, need to comply with the doctor’s instructions to use leukotriene receptor antagonist (such as montelukast) treatment. In infants with severe or persistent runny noses, it is advisable to consult a specialist for assessment and intervention.