Many parents don’t know when to brush their baby’s teeth, how exactly they should brush their teeth, and some parents have never even let their baby brush their teeth, which is all very incorrect. 0 to 6 months old baby has not teething, parents can use a clean gauze, wrapped around the finger dipped in some warm water, the baby’s tongue and gums at the milk scum wipe clean, it is best to clean 1 time after each meal, and at least once a day before bedtime, so that not only can keep the teeth erupted environment, but also massage the gums. When the baby has small milk teeth, the parents can sit and let the baby’s head face the parents, lying sideways and flat on the parents’ lap, the parents see every part of the baby’s mouth from directly above, and use clean gauze or finger toothbrush in a horizontal lateral way to help the baby clean the milk teeth. When the baby is 3 years old, you can demonstrate and explain to the mirror, and let the child try to brush his or her own teeth, gradually transitioning from parent-assisted brushing to the baby brushing his or her own teeth. Baby’s toothbrush should have soft bristles and a small head so that it can brush every surface of the teeth, and should be placed vertically and kept dry after each use. Replace the toothbrush when it becomes worn, such as when the bristles fall apart. In any case, change your toothbrush at least every 3 months, and always change your toothbrush when you get sick, because old toothbrushes can harbor bacteria. If your baby has not mastered the art of rinsing, you may not use toothpaste for a while. I wish every baby can learn the correct way to brush their teeth and have beautiful and healthy teeth.