Breastfeeding mothers who have holes in their teeth, whether the teeth can be filled, should be divided into the following two cases: 1, breastfeeding mothers who have shallow holes in their teeth, known as shallow caries or moderate caries, can be filled, because this operation will not lead to an increase in the bacterial content of breast milk or blood, but on the contrary, for the reduction of the bacterial content of the oral cavity is very effective, the mouth after the filling of insect teeth in the process of breastfeeding the child and feeding the child supplements will reduce the probability of spreading bacteria to the child; 2, breastfeeding mothers who have deeper holes in their teeth, in the process of removing the decay will be very serious pain. In the process of breastfeeding the child as well as the process of feeding the child complementary food, will reduce the probability of spreading bacteria to the child; 2, breastfeeding mothers with deeper holes in the teeth, in the process of removing caries, there will be very serious pain symptoms, then if the mother does not want to be so painful you need to use anesthesia for treatment, but anesthesia clinically often used local anesthetic drugs, is available to breastfeeding mothers in the breast milk. Therefore, if you want to use anesthesia to carry out deep caries filling treatment, it is generally recommended that breastfeeding mothers to stop breastfeeding within 1-2 days, and then after that you can breastfeed normally.