Three months baby biting milk belongs to a common phenomenon, generally belongs to a normal physiological behavior, because this time period of the baby is also a cognitive stage of contact with things, biting milk is a way of cognitive things. Three-month-old baby biting milk mostly does not belong to the hunger caused by, often and his playfulness related, some are and baby teething stage of the teeth bed has itchy, some like to bite things to improve. If the baby’s urine and feces amount is normal, sleep condition is good, weight gain is normal, breast milk amount is normal, there is the case of biting the milk need to pull out the nipple in time, otherwise it is easy to damage. You can pat the child, some children will gradually adapt to this kind of communication, will know that this is a kind of admonition, some slowly do not bite, if necessary, you can buy the child some teething bars.