Abstract: Colorectal cancer is a common malignant tumor of the digestive system. In recent years, with the changes in people's lifestyle, dietary structure, and the intensification of environmental pollution, the incidence of colorectal cancer in adolescents and young adults (AYAs) has significantly increased. AYAs refer to individuals aged 15 to 39, and compared with elderly cancer patients, AYAs with cancer have higher long-term and advanced-stage risks as well as worse prognosis, and colorectal cancer also become an important cause of death in AYAs. This study took colorectal cancer as a study point to analyze the risk factors and clinical characteristics of AYAs with colorectal cancer, explored the diagnosis and treatment methods for AYAs with colorectal cancer, and provided a basis for formulating prevention and control measures in clinical practice.