Newborn babies cry at night and do not sleep, mainly because of physical discomfort or environmental discomfort. Physical discomfort is most commonly associated with colic, noisy environment, and inappropriate temperature, all of which tend to cause babies to cry. Babies because of cold air stimulation or improper diet, hunger or overfeeding, may induce gastrointestinal tract parts of the discomfort, induced colic. Exhaustion exercises should be given promptly and the stomach should be rubbed clockwise to relieve flatulence. Indoor temperature is too high or too noisy, and at this time the baby just out of the familiar uterine environment, it is easy to the outside world of insecurity and stimulation to react, is to cry mainly, at this time to give enough security, then the baby crying at night symptoms can be significantly improved. Newborns cry at night, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.