Breastfeeding has been recognized as the most natural and nutritious way of feeding babies. Besides the nutritional, immunological and emotional benefits, breastfeeding promotes a healthy stomatognathic system. First of all, the nutrients and minerals in maternal milk are easy to be absorbed by the infants, which contributes to the mineralization of the teeth, and suppress the propagation of bacteria on the teeth. Though the jury is still out on whether breastfeeding can prevent Early Childhood Caries (ECC), it is definite that we should pay attention to feeding at night and the oral hygiene of the babies. Secondly, the method of feeding is closely bound up with the development of dentition and jaw. Breast- and bottle-feeding involve different orofacial muscles, which possibly have different effects on the harmonic growth of maxilla and dental arches. Meanwhile, breathing, swallowing and mastication should be developing in harmony, and differences exist in the learning of the coordinated movement between breast feeding and bottle feeding children. Bottle feeding had been proved to be closely related with the non-nutritive sucking habits which can cause malocclusion. At last, it should be pointed out that breast feeding should be the only feeding source in the first 6 months of life, then supplementary foods should be added. And prolonged bottle feeding should be avoided. We can see that breast feeding is definitely good for the infants, but the reality is not optimistic in our country.