Newborn babies need to find the reasons for crying at night, may be related to the scare, calcium deficiency, indoor environment discomfort and other factors, mainly to daily soothing and supplementation treatment, specific analysis is as follows: 1. Frightened: newborn babies who are frightened by the outside world will cry at night, parents need to pay attention to the soothing, sleep can be temporarily held to give the baby a sense of security. 2. Environmental discomfort: If the baby’s environment is hot and stuffy, it will cause the baby to wake up repeatedly and cry more than once, and the symptoms will disappear after reducing or increasing the clothing. 3. Calcium deficiency: newborn babies with calcium deficiency will also have the above symptoms, accompanied by excessive sweating, occipital baldness and other adverse reactions, you need to go to the hospital in a timely manner to conduct relevant examinations to determine the lack of calcium need to be treated with calcium and vitamin D and other supplements. Newborn babies crying at night do not sleep may also have other reasons, it is recommended to go to the hospital in a timely manner to carry out relevant examinations to determine the cause of the disease and actively treat the symptoms, in addition to the above medication is recommended to be taken under the guidance of a doctor.