Regular checkups and timely treatment of diseases are one of the effective ways to prevent oral diseases in the middle-aged and elderly, and through scientific care, the elderly can have the same healthy teeth as the young. Entering old age, teeth calcification, organic matter reduction, manifested as tooth wear, gum recession, teeth loose and fall off, dental care for the elderly should form good oral hygiene habits: 1, adhere to the correct brushing with warm water every morning and evening, use health care toothbrush or use dental floss for oral cleaning, brushing teeth before bedtime is more important than brushing teeth in the morning; 2, to develop good habits: no smoking, no alcohol, balanced diet It is very important to avoid bad stimulation and maintain good oral hygiene to prevent the occurrence of oral cancer. Oral examination should be conducted once every six months or once a year to treat diseases early and prevent diseases early. Regular scaling (commonly known as scaling) to prevent the occurrence and progress of periodontal diseases. When the tooth appears to be painful in case of hot, cold, sour or sweet stimulation, it should be promptly checked and treated in a regular oral medical institution. Preserve every tooth that can be treated and never pull it out easily.