The reason why babies always wake up when they are put down is because the sleep has not yet reached the level of deep sleep, the baby has fallen asleep on the surface, but the sleep is not particularly heavy, and when parents put the baby in bed will suddenly wake up and cry. So for this situation, you can give your baby the following measures to relieve: First, to let sleep into the deep sleep period, parents should wait patiently for a while, do not soon let the baby lie in bed. Secondly, to change the bad habit of holding to sleep, try to put the baby in bed when he sleeps, let the baby fall asleep on his own, do not hold to sleep.