If a two-year-old baby has a runny nose, 1. it is usually a cold virus that causes upper respiratory tract infections. You can drink more warm water, eat more vitamin C-rich food and fruit, you can also use cabbage heart radish boiled water for the baby to drink. 2, cold symptoms if not relieved, we must eat some cold medicine, you can eat busulfan anti-inflammatory oral liquid to, and pediatric aminophenol yellow Naimin granules. 1 day need to take 3 times, the specific dosage according to, weight according to the instructions to use. 3, in addition, also does not exclude If the symptoms of allergic rhinitis are serious, you can take some oral dexloratadine to solve the symptoms of allergy. Then go to the hospital to check the allergens and avoid contact with them in the future.