Baby sleep difficulties at night parents need to do a few things: 1, the bedroom environment should be suitable for the baby to fall asleep, light dimming, curtains closed to keep the room quiet, you can listen to bedtime music or tell a bedtime story, help the baby sleep. 2, do not eat too much before going to bed, eat too much stomach for digestion, absorption, which is prone to stomach upset, will also affect the sleep. 3, before going to bed Do not let the baby for strenuous activities, such as playing some more strenuous games, should be in a quiet state reading, listening to music, which also helps to sleep. If the above points are adjusted to fall asleep or more difficult, it may be caused by calcium deficiency, you can give the baby to eat a period of time vitamin AD, helps calcium absorption, if there is no calcium deficiency symptoms will soon fall asleep.