Babies don’t necessarily need to wear hats, especially at home, where the air is relatively airtight and babies seldom get cold from the wind. Outdoors, if the weather is cold or windy, you can give your baby a hat to avoid the symptoms of wind and cold. The reason why some infants wear hats is that parents think that infants will look better with hats and have some protection for their heads, and there is some truth in this understanding. If the infant physical state is relatively good, home residence, this time there is no need to routinely give the infant to wear a hat. If the hat is worn too tightly, on the contrary, it will affect the development of the infant’s head and cause discomfort.