Infants and young children running a clear nose are mostly cold symptoms caused by viral infections, you can give your child oral herbal cold medicines, such as pediatric antiseptic granules, pediatric cold granules, pediatric black cohosh and clear heat granules, etc. You can also use sea salt water nose drops to give your child nasal drops. At the same time, let the baby drink more water and keep the indoor air circulation. If with the above methods for a week, the child’s symptoms are not significantly relieved, you need to take the child to the ENT department to see if there is allergic rhinitis, if allergy-induced runny nose, you need to use desensitizing drugs such as loratadine, and at the same time, you can be given desensitizing nasal drops for treatment. So the child’s runny nose for a long time must first clarify the cause of the disease, and then can be used to treat the symptoms of the drug.