Abstract: Colorectal cancer (CRC) is one of the most common malignant tumors worldwide, and its incidence and fatality rates rank at the forefront of malignant tumors. In recent years, with the maturity of laparoscopic and robotic technology, and the application of new staplers, the efficacy and safety of surgery for CRC have improved; however, postoperative complications still seriously affect postoperative quality of life and survival time. Identification of nutritional predictors of CRC is conducive to the early identification of high-risk patients, reinforcement of individualized care, enhancement of the quality of peri-operative management, reduction in the incidence of postoperative complications, and improvement of the short- and long-term prognosis. In this paper, the literature on nutritional predictors of postoperative complications of CRC was reviewed, the evaluation contents and efficacy of nutritional predictors were summarized, and their advantages and disadvantages were analyzed. The aim is to provide a reference for identifying nutritional predictors of postoperative complications of CRC that are readily accessible, low-cost, and adjustable pre-operatively.