Most small babies are used to sleeping with their hands outside the quilt, which generally does not cause the baby to catch a cold, but if the baby’s hands are cold, it may be caused by the low temperature of the surrounding environment. Babies because of the imperfect development of various body functions, poor peripheral circulation, easily affected by the external environment and change, if the ambient temperature is low, wear clothes or cover quilt is thin, baby’s hands after sleep for a long time on the outside is easy to get cold, you can adjust the ambient temperature higher, or give the baby cover a little thicker quilt, but not too thick, so that the baby does not feel hot more likely to stir quilt, so it is easy to make the baby cold. This makes it easy for the baby to catch a cold. To know whether the thickness of the baby quilt is appropriate, you can touch the back of the baby’s neck, if it is warm, it means that the baby covers the right thickness of the quilt, if cool, you need to increase the thickness of the quilt, you can also give the baby to wear a warm top or wear small gloves, but not too thick to avoid causing the baby to sweat uncomfortable. Parents should be careful when the baby sleeps, the environment temperature should be appropriate to avoid the quilt cover too thick or too thin to cause baby discomfort, to prevent baby stirring quilt, so as not to catch a cold.