Newborn baby in the month is not necessarily to wear a hat, mainly combined with the weather conditions. The statement that you must wear a hat in the month is the traditional view, there is no scientific basis. The current living conditions are more suitable, indoor general do not need to wear a hat, if the winter indoor temperature is relatively low, is to wear a hat. Choose the time to choose a hat according to the child’s head circumference, than the head circumference of about 1cm on, the hat can not be too tight, otherwise it will be uncomfortable. If it is summer, the weather is hotter, the child in the indoor more do not need to wear a hat. When you go out to wear a sun hat, because the newborn’s retina is not well developed, to prevent strong light damage to the retina, and sun hat to choose a good breathability.