A baby’s runny nose can be caused by blocked boogers, rhinitis and nasal congestion. Different causes need to use different treatments to cure. 1, if it is due to excessive boogers blocking the nasal cavity or snot caused, you can use a clean cotton swab dipped in a small amount of water to clean the nasal cavity. When using a cotton swab, you must pay attention to the strength of the hand, do not hurt the baby’s nasal cavity, or use a nasal aspirator to suck out the boogers and snot and other blockages. Afterwards, observe the follow-up situation, whether there is any improvement. 2, if it is caused by cold or rhinitis after cold, you can give the child appropriate warmth, if it is caused by cold, need to take the child to the doctor, so small babies are not recommended to casually use medicine. 3, if it is due to the nasal cavity mistakenly into other foreign objects caused by parents in the discovery of signs of foreign body invasion, should take the baby to the regular hospital, by professional doctors to remove the foreign body in the nasal cavity can be solved. The body of the baby is still relatively fragile, parents need to pay attention to the baby’s physical condition. Especially for babies who have just turned one month old, they should seek medical attention immediately after finding no relief using the above methods.