Adhere to the following principles of sleep hygiene is conducive to the development of good sleep habits in children. 1, the sleep environment should be quieter and darker; 2, 3 months after the baby sleep their own crib (crib can be placed next to the adult bed); 3, wake up and sleep time should be strictly defined to strengthen the training of the physiological rhythm cycle; 4, the room temperature to maintain a comfortable level, should not be too hot and disturb sleep; 5, sleep should avoid hunger, bed or night should not drink too much water, so as not to disrupt sleep due to urination; 6, to develop their own Sleep habits, avoid developing the bad habits of holding, patting, shaking or sleeping with a nipple before bed; 7, 1 to 2 hours before bedtime to avoid playing too excited; 8, a warm bath before bedtime, do infant massage is beneficial to sleep; 9, daytime naps should be appropriate, avoid long or frequent naps during the day.