Knocking or biting the teeth is a method of traditional Chinese medicine health massage and an effective measure of dental health care. Modern science proves that knocking or biting can excite the nerves, blood vessels and cells of the teeth and periodontal tissues, promoting the blood circulation of the teeth and periodontal tissues and enhancing their resistance to diseases. It can enhance the anti-disease ability. Generally speaking, we advocate knocking once a day in the morning and once in the evening, and the number of knocking each time varies from person to person. The strength of percussion is not uniform and can be measured according to the health of the teeth. However, it is not suitable for people with dental disease. It is unrealistic to hope for a big effect in three or five days. Biting is also a dental health care method, that is, gently bite the real, one or two times a day, or two or three times a day, has a strong teeth.