There is no strict age limit for teaching children to brush their teeth. Under normal circumstances, if a family is strict about their child’s hygiene, they can usually start teaching their child to brush their teeth around the age of 2-3 years old. However, brushing teeth may not be clean enough for a 2-3 year old child. In order to develop good brushing habits, children should learn to brush their teeth as soon as they are old enough to do so, as this will help their dental health. Generally speaking, children should brush their teeth independently by themselves, but if the child is too young to brush his/her teeth independently, parents should gradually teach the child how to brush his/her teeth and train the child to develop the habit of brushing his/her teeth independently. Before a child reaches one year of age, when the baby teeth are just coming in and the child is unable to brush his/her own teeth independently, parents need to use clean gauze rolls or cotton swabs dipped in warm water to wipe the child’s teeth and gums after each feeding to keep the oral cavity clean and hygienic. When your child’s baby teeth begin to develop at one and a half years of age, parents can try brushing your child’s teeth with a toothbrush. When your child is 2-3 years old, you can gradually teach your child how to brush his or her teeth. When teaching children to brush their teeth, parents can first demonstrate to their children themselves. Because parents are the earliest teachers of children and children spend the most time in contact with them, they learn many habits from their parents. Therefore, when children see their parents brushing their teeth, they will follow suit. Parents can squeeze out the right amount of toothpaste on the toothbrush, fill the cup with water, which is the preparation work before brushing, followed by the action of brushing, in fact, it is very simple, as long as to ensure that each tooth can be brushed all the way to the can. Generally speaking, when children are about 5 years old, they can basically develop the habit of brushing their teeth, and after 7-8 years old, the habit of brushing their teeth has been very mature, and often do not need parental supervision.