Viral colds in three-month-old babies may be caused by triggers such as cold and poor immunity, plus exposure to pathogens. Can be under the guidance of the doctor to be symptomatic supportive treatment, such as nutritional support, physical cooling, sea salt water nasal spray and so on. 1. General treatment: the baby has a viral cold can be appropriate bed rest, parents can continue to be formula milk or breastfeeding nutritional support. Usually can give the baby appropriate increase or decrease clothing. Avoid overheating or coldness. 2. Antipyretic: If the baby has a fever, the temperature is less than 38.5 ℃ can be given to the physical cooling treatment, you can use a warm towel to wipe the baby’s whole body arteries flow through the place, such as the armpits, groin, neck and so on. Help physical cooling. If the body temperature is higher than 38.5 degrees Celsius and poor mental condition, can be strictly under the guidance of the doctor, to be ibuprofen suspension drops to lower the temperature. 3. Relieve nasal congestion: viral cold babies are prone to nasal congestion and sore throat performance, can be under the guidance of the doctor to the sea saline nasal spray, dilute secretions. Parents of three-month-old babies with viral colds should take their babies to the hospital pediatrics, under the guidance of the doctor for the appropriate treatment and therapy.