Three-month-old infants often suffer from colds. Currently, they are receiving intravenous treatment and taking An Ning granules. Parents should pay attention to the baby’s daily care. If the baby has a fever, alcohol rub can be used to help reduce the fever, but it is important to identify the cause of the fever as it could be a symptom of various diseases, including infections and connective tissue disorders. Medication should not be rushed without determining the cause.