If the monthly baby does not sleep after eating milk, to rule out the existence of insufficient intake, when the breast milk is insufficient when the baby exists hunger, physiological needs can not be satisfied, so easy to cry and restless. In addition to exclude the above situation to pay attention to the following possibilities: 1, vitamin D deficiency rickets, most common in preterm babies and babies born in the fall and winter seasons, they will appear to cry obviously as well as seasonally unrelated excessive sweating, occipital baldness, etc., to be given timely supplementation of vitamin D. 2, brain damage syndrome, if the baby still cries and restlessness after breastfeeding and the mother to pacify the ineffective, and no eye interaction with the mother while eating, to pay attention to brain lesions and developmental abnormalities, to the brain, to the brain, to the brain, to the brain, to the brain, to the brain, and the brain. Interaction, to pay attention to the possibility of brain lesions and developmental abnormalities, to the neonatology or pediatric rehabilitation department for early assessment.