Abstract: Tooth wear is one of the most common physiological phenomenon, excessive wear can damage tooth,dental pulp,periodontal tissues and temporomandibular joint, affecting masticatory function and beauty. At present, the treatment methods of wear are limited and focus on prevention. Generalized wear can be divided into abrasion, attrition and erosion, tooth wear is the result of them. It is widely known that tooth wear is related to many factors, macroeconomic factors such as environmental factors, physiological factors, the development of oral behavioral factors and iatrogenic factors, micro factors such as micro cracks on tooth surface and enamel rod arrangement. This paper reviews the classification and related factors of tooth attrition. This article reviews the classification and related factors of tooth attrition.