Non-carious dental hard tissue disease is a common and frequent oral disease in elderly patients，mainly including abrasion，wedge-shaped defects，dentine hypersensitivity，cracked tooth and dental trauma. There are many reasons，including the change of tooth aging，which can also be caused by eating habits，living habits and tooth development. Patients with this type of disease usually experience the primary manifestations of tooth sensitivity，discomfort with chewing food，or pain. In order to improve the quality of life of elderly patients，to retain the affected teeth as the goal，combined with the comprehensive analysis of the systemic situation of patients，the treatment measures are mostly to alleviate clinical symptoms，while strengthening the corresponding prevention and treatment planning and measures.