If the baby is in a general state of mind and does not like to eat milk recently, it may be a cold. If the runny nose is mostly caused by viral infection, you should also use Shuanghuanglian Oral Liquid for antiviral treatment. If the mucous nasal discharge turns yellow, it should be combined with bacterial infection, and antibiotics should be added. During the treatment period, you should feed your baby more water, and if it repeatedly exceeds 38.5℃, you should use antipyretic plugs to reduce fever by intra-anal filling, or you can go to the pediatric department of the hospital for examination.