The baby’s frightening sleep is not solid and easy to wake up crying can be caused by uncomfortable environmental temperature, hunger or dirty diapers, lack of vitamin D or calcium deficiency, gastrointestinal discomfort, by changing the environmental temperature, breastfeeding or changing diapers, supplemental vitamin D or calcium, surgical treatment to alleviate the baby’s crying mood. 1. Uncomfortable ambient temperature: babies may feel uncomfortable and cry if they are overdressed or covered with too thick bedding resulting in higher body temperature, underdressed with lower body temperature, or indoor temperature is too high or too low. Observe whether babies are sweating or cold, reduce or increase clothing, adjust indoor temperature, and stabilize babies’ moods. 2. Hungry or dirty diaper: baby hungry at night, diaper is feces or urine soiled will also cry more than, baby hungry to appropriate breastfeeding, feces to wash the anus in a timely manner, and then replace the clean diaper, the baby comfortable will not cry again. 3. lack of vitamin D: the baby’s body lack of vitamin D, will cause non-specific neurological changes, showing easy to cry, irritable and other symptoms, especially at night crying more obvious, supplemental vitamin D and calcium may improve the symptoms. 4. gastrointestinal discomfort: baby gastrointestinal discomfort, such as abdominal distension, abdominal pain will be crying at night, clear abdominal distension with a hand in the clockwise direction gently rubbing the abdomen, may be able to relieve discomfort. No improvement continue to cry may be intestinal obstruction caused by abdominal pain, serious surgical treatment. Babies crying in addition to physiological factors, need to seek medical attention. The above medications should be used under medical supervision.