The first thing is to improve the elderly’s own oral health care ability. To ensure the cleanliness of the oral cavity is an effective method to prevent dental caries and periodontal disease, we must brush our teeth correctly, and it is best to use fluoride toothpaste, which can prevent root surface caries, and if the teeth are sensitive, we can use desensitizing toothpaste. At the same time, use dental floss to clean the interdental space. Secondly, it is very important to develop good living habits: no smoking, no drinking, balanced diet, avoiding bad stimulation and maintaining good oral hygiene to prevent the occurrence of oral cancer. Oral examination every six months or once a year can achieve the purpose of preventing the occurrence of oral diseases. Finally, if there are problems in the oral cavity, it is important to go to a regular oral medical institution to seek medical treatment, which is the guarantee of oral health. Formal oral health care institutions can provide quality health care services for middle-aged and elderly people to help you maintain the most basic oral function status, or restore oral function as much as possible through the minimum restoration. In addition to good self-care, the oral surgeon will protect your oral health.