1, 0-before the eruption of milk teeth (generally about 6 months after birth) Oral health care should start at birth. Before teeth eruption, after each feeding to the baby, and then feed a few mouthfuls of plain water, in order to rinse the residual food, if necessary, parents can be sterilized cotton or gauze sets in the finger after dipping water will be in the baby’s mouth the tongue and gums at the milk crumbs wipe clean, to reduce the breeding of oral bacteria, can reduce or delay the occurrence of caries. 2. 6 months – 1.5 years old Parents sit on the sofa or the edge of the bed and let the toddler lie in the parents’ arms. Use one hand to hold the head and lips of the child in place, and the other hand to hold a clean gauze or finger toothbrush for infants and children, moistened with warm boiled water to clean the outer and inner sides of the child’s teeth. 3, 1.5 years old – 3 years old This period of time children can begin to use a toothbrush, but brushing is mainly done by adults. Young children can stand upright or sit on a chair or stool, the mother or other parents behind or to the side of the child, with one hand to fix the child’s head, the other hand holding the child’s toothbrush dipped in warm boiled water for young children to brush their teeth (without toothpaste), brushing the teeth of the following order: (1) the front teeth, the back of the outside of the teeth – hold the toothbrush, so that it is with the teeth to a 45-degree angle, starting from the gum line, brushing back and forth gently and in a small increments (2) the inner back teeth – brushing range should be small, brushing action to form a certain degree of curvature; (3) the inner front teeth – to keep the toothbrush and teeth perpendicular to the toothbrush head up and down brushing; (4) chewing surfaces – holding the toothbrush flat, brushing gently; each surface should be brushed 15 to 20 times, in order to achieve the purpose of cleaning the teeth. (4) Chewing side – hold the toothbrush flat and brush gently. During this period, parents should pay attention to cultivate children’s interest in brushing, so that children from childhood to develop good oral hygiene habits, will benefit for a lifetime. 4.3 years old —-6 Children should start brushing their own teeth under the guidance of adults, the method is the same as above, but still need the help of adults to brush their teeth clean. In addition to the tooth surface cleaning methods described above, there is a point to draw the attention of parents is the baby’s interdental cleaning. Because of their unique anatomical shape, baby teeth are prone to food impaction. In addition, there are physiological gaps in the milk teeth, which are also prone to food impaction. Parents and children should learn how to use dental floss, which can easily remove embedded food debris, keep the interdental space clean and prevent tooth decay. We wish all children healthy teeth!