Abstract:Esophageal cancer, gastric cancer, and colorectal cancer, as the three major malignant gastrointestinal tumors that seriously threaten the health of the Chinese population, pose severe challenges to the prevention and treatment due to their high incidence rates and relatively low early diagnosis rates. To effectively enhance the levels of early screening, diagnosis, and treatment, and thereby reduce both incidence and mortality rates, National Clinical Research Center for Digestive Diseases, National Gastroenterology Quality Improvement System, and National Key Laboratory of Immunity and Inflammation have taken the lead in organizing experts from multiple fields to formulate these recommendations. Focusing on key public health and clinical questions of early screening, diagnosis, and treatment in these three cancer types, the recommendations systematically put forward core suggestions, including optimizing screening strategies, promoting the application of technological innovations, strengthening quality control standards for diagnosis and treatment, and standardizing endoscopic treatment and follow-up strategy. The aim is to provide scientific guidance for medical institutions at all levels and drive the high-quality development of gastrointestinal tumor prevention and treatment system in China.