Nonalcoholic fatty liver disease(NAFLD) is a common chronic liver disease in clinical practice,with the incidence increasing year by year along with the improvement of living standard and changes of lifestyle.Through literature review,this paper summarized the main etiology,pathogenesis,main syndromes,TCM constitutions,and characteristics of NAFLD.Further,we introduced the relationship between NAFLD and TCM constitution from constitution differentiation,correlation between constitution and syndrome,and constitution adjustability.On the basis of the review,we made an outlook on prevention and control of NAFLD,aiming to the give full play to the advantages of TCM in the preventive treatment of diseases.