Shuwen Han,1 Jianlan Gao,1 Qing Zhou,2 Shanshan Liu,3 Caixia Wen,3 Xi Yang4 1Department of Medical Oncology, Huzhou Central Hospital, 2Department of Critical Care Medicine, Huzhou Central Hospital, 3Medical College of Nursing, Huzhou University, 4Department of Intervention and Radiotherapy, Huzhou Central Hospital, Huzhou, Zhejiang Province, People’s Republic of China Abstract: Colorectal cancer is one of the most common human malignant tumors. Recent research has shown that colorectal cancer is a dysbacteriosis-induced disease; however, the role of intestinal bacteria in colorectal cancer is unclear. This review explores the role of intestinal flora in colorectal cancer. In total, 57 articles were included after identification and screening. The pertinent literature on floral metabolites in colorectal cancer from three metabolic perspectives – including carbohydrate, lipid, and amino acid metabolism – was analyzed. An association network regarding the role of intestinal flora from a metabolic perspective was constructed by analyzing the previous literature to provide direction and insight for further research on intestinal flora in colorectal cancer. Keywords: colorectal cancer, bacteria, microbiology, carbohydrate metabolism, lipid metabolism, amino acids, inflammation