If you want to adjust the baby’s black-and-white reversal, you can let the baby play more during the day, and keep quiet at night to promote the baby to sleep better at night. 1. more play during the day, the baby black and white reversal is mainly related to the usual habits, you can take the baby out to play more during the day, more communication with the baby, but also need to properly control the baby’s nap time, it is best not to let the baby daytime long time to sleep. 2. Keep quiet at night, the process of sleeping at night need to create a good sleeping environment for the baby, the temperature is appropriate, at the same time, it is best not to be too noisy, so as not to affect the baby’s sleep, if the baby’s sleep is not stable, may lead to reversal of black and white. Sleep pattern needs to be adjusted for a period of time before gradually recovered, no need to be overly nervous.