If a newborn baby has a reversal of day and night, this is a disruption of the work and rest habits. Parents can use the following methods to adjust. First, let the child’s surroundings adjust the light. If at night, parents must dim the light in the room or turn off the lights, so that the child slowly adapt to the night environment. Let the child after a period of transition, understand that when the light is dark, to sleep, so that the child has slowly adapt to the transition situation, the child slowly will be able to sleep naturally at night. Secondly, change the surrounding sounds. When the child is going to sleep at night, it is important to keep the indoor environment quiet. When parents speak, they should gently or gently touch the child with their hands, all of which are helpful for children to develop the habit of sleeping at night. And the light at home during the day can be brighter, but also let the child appropriate more play for a while, after the child fatigue, the night can also naturally sleep more solid.