The paper analyzes SCI papers on metabolic diseases in the field of nutrition published from 2010 to 2015 in the core collective database of Web of Science^TM by use of the co-word clustering method. It extracts high-frequency subject headings, generates the co-occurrence matrix and makes clustering analysis of the matrix with SPSS, and indicates that major research focuses in this field are researches on metabolic syndrome from different angles such as the cardiovascular disease, insulin resistance, risk factors of the coronary disease, body mass index, the obesity group and adipose tissue, etc.