Abstract: In 2024, the American College of Gastroenterology (ACG) and the American Society for Gastrointestinal Endoscopy (ASGE) comprehensively updated the quality indicators for colonoscopy. This update aims to enhance the quality of colonoscopy, thereby more effectively reducing the inci-dence of colorectal cancer. The update contents include optimization of traditional quality control indicators, as well as the introduction of new assessment standards, such as the detection rate of sessile serrated lesions. Key priority indicators, including adenoma detection rate and adequate bowel preparation rate, have been further refined and quantified to ensure their operability in clinical practice. The updated indicator system emphasizes a balanced focus on both outcome evaluation based on long‑term clinical data and process quality assessments, further underscoring the scientific nature and standardization of these quality control measures. The authors review the quality control indicators of the updated version and provide a systematic analysis of the clinical significance and specific operational guidelines for priority indicators. Additionally, they explore the critical role of these quality control measures in improving colonoscopy quality and reducing the risk of missed diagnoses. The aim of this review is to promote the further refinement and implementation of quality control standards, thereby providing stronger support for early prevention and treatment of colorectal cancer.