If the baby cries more than once, the first thing to do is to find out what causes the crying, and then give the appropriate solution. The following situations are common: 1. Physiological factors: such as caused by hunger or high or low ambient temperature, so pay attention to adequate breastfeeding, appropriate ambient temperature, comfortable clothing, etc. 2. Difficult temperament: everyone’s temperament is different and inherent, and difficult babies are more difficult to bring up in the process of raising, to The baby should be taken to the child health department for temperament assessment and early intervention if necessary. 3, vitamin D deficiency rickets: often accompanied by crying and restlessness, occipital baldness, square cranium, etc., will gradually improve after giving vitamin D and calcium supplements, more outdoor activities and sun exposure. 4, physical diseases: when there is abdominal pain, fever, upper respiratory tract infections, go to the hospital in a timely manner.