There are many reasons why infants always cry their hearts out, such as insecurity, hunger and other physiological factors, and colic and other pathological factors. 1. Physiological factors: Because babies can’t speak for the time being, they will draw parents’ attention and fulfill their needs by crying. So when the baby is insecure, excessively hungry, frightened, not in time to change the diaper and so on, may appear to cry heart-breaking phenomenon. 2. Pathological factors: babies always cry heartbreakingly may also be due to the disease caused by the body pain and other symptoms of discomfort, such as intestinal spasm, colic, irritable bowel syndrome and other gastrointestinal diseases. Babies always cry heartbreakingly, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to determine the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.