Brushing is a common knowledge of oral health that is not new to our daily lives, but not everyone has a proper understanding of the specifics of brushing. The following is a brief overview of the issue of tooth brushing. 1, the purpose of brushing: to remove food residues and dirt remaining in the mouth, massage the gums, promote blood circulation in the gums and improve the immunity of the gum tissue. 2, the method of brushing: brushing should be done in order according to the two parts of the upper and lower jaw, the left, middle and right three zones. The above six zones are repeated 10 times per zone to each tooth surface when brushing, for a total time of about 3-5 minutes. When brushing teeth, you should let the toothbrush rotate up and down along the long axis of the teeth into a 45° vertical brushing method. 3, the number of brushing: generally advocate the “three three system” brushing method, that is, three meals a day after brushing, three minutes each time, each brush teeth lip and cheek side, tongue and palate side, occlusal surface. Brushing should be done about three minutes after each meal. 4, the elements of correct brushing: correct brushing method, suitable toothbrush, good toothpaste. 5, the choice of health care toothbrush: toothbrush head size appropriate, toothbrush bristles soft and hard moderate, bristle tip is round, toothbrush handle flat and straight. Toothbrush should be washed after brushing, personal use, regular replacement, about 3 months to replace once. 6, the choice of toothpaste: the main components of toothpaste are friction agent, cleaning agent, wetting agent, preservative, aromatic agent and water composition. When choosing toothpaste, mainly consider whether the toothpaste contains fluoride, fluoride toothpaste can prevent tooth decay; toothpaste should be more delicate and smooth in texture, not necessarily must contain drugs. In general, if there is no disease such as gum inflammation, it is better not to choose drug toothpaste. In addition, drug toothpaste is not easy to be applied for a long time.