Newborns and infants often cry to express their demands or pain. Hunger, panic, damp diapers, too cold or too hot clothes, etc. can cause crying. In this case, if fed with breast milk, soothed with intimacy, changed wet diapers, and adjusted the thickness of clothes and blankets, the crying can be stopped quickly and is not pathological. This section mainly discusses the unexplained recurrent crying of small infants at night, while crying caused by fever or other diseases is not covered by this evidence. Infants can sleep quietly during the day, but at night they cry restlessly, stop crying sometimes, or cry regularly every night, or even all night long, called night crying. Mostly seen in newborns and infants within 6 months of age. The Chinese medicine believes that night crying in children is often due to spleen cold, heart heat, shock, food accumulation and onset. The symptoms are: (1) spleen and stomach deficiency cold, the symptoms are seen in the child’s face pale, the limbs are not warm, like lying down, abdomen cool, bending and curling legs crying, do not think about eating, loose stools, urine clear and long. The tongue is pale with white fur, the pulse is thin and slow, and the fingerprints are light red. Treatment is to warm the middle and strengthen the spleen. (2) Heart-heat frightening, see the child with red face and lips, restlessness, heat from the mouth and nose, restless sleep at night, a fright, warmth in the body and abdomen, constipation, short red urine. The tongue is red with yellow coating, and the pulse is slippery. Treatment is to clear heat and calm the mind. (3) Apprehension and fear, with nighttime crying, red or greenish face, restlessness, alarm and anxiety, easy to wake up in sleep, crying in dreams, sounding miserable and tight, fearful, clinging to the mother’s arms, with no abnormal changes in pulse, lips and tongue. The treatment is to calm the mind. (4) stagnation of milk and food, the symptoms are night crying, anorexia and vomiting of milk, belching and acidity, abdominal pain and fullness, sleep and restlessness, sour and smelly stools, thick and greasy tongue coating, purple stagnant fingerprints. The treatment is to eliminate food and guide stagnation.