It is not normal for children not to cry because they are young and express their needs through crying when they have to urinate or defecate or are hungry. If the child rarely or hardly cries, pay attention to the following points: 1. Delayed language development. Babies are young and crying is the earliest manifestation of language development, with loud cries present after birth. If the baby often does not cry, and in March age still can not laugh out loud, and rarely have eye contact with people, you should pay attention to the language development delay, need to promptly go to the hospital. 2, muscle strength, muscle tone hypotonia. When the baby has low muscle strength and muscle tone, the baby does not move, or even rarely cries, and still has an unstable vertical head at the age of three, you need to go to the pediatric rehabilitation department in time.