Adolescent idiopathic scoliosis (AIS) is the most prevalent three-dimensional spinal deformity among adolescents aged 10 to 18. With a high incidence, AIS not only compromises physical aesthetics but also poses significant threats to adolescent health by potentially leading to complications such as back pain and cardiopulmonary dysfunction. Nutrition-related factors, including low BMI, low bone mineral density, and vitamin D deficiency, are critical risk factors for the onset and progression of AIS. Conversely, synergistic interventions "combining rational nutritional management with rehabilitative exercise" are vital for controlling curvature progression, enhancing organ function, preventing complications, and improving quality of life. Currently, the lack of unified standards for nutritional and rehabilitative management in AIS has resulted in non-standardized clinical workflows and inconsistent intervention outcomes. Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medicine School; China Rehabilitation Science Institute; China Rehabilitation Research Center; Professional Committee on Integrative Nutrition Management, Jiangsu Integrative Medicine Research Society; Specialty Committee of Rehabilitation Engineering and Industry, China Association of Rehabilitation Medicine; and Regenerative Repair and Anti-Aging Branch of Guangdong Association for the Development of Rehabilitation Medicine initiated a multidisciplinary expert collaboration. Based on the latest evidence-based medicine and clinical practice, this consensus was developed, comprising 19 recommendations. This consensus delineates the core principles and key pathways for nutrition-related risk factors, nutritional screening and assessment methods, intervention strategies, rehabilitative exercise, and multidisciplinary management for AIS patients. It recommends using the Screening Tool for the Assessment of Malnutrition in Pediatrics for nutritional risk screening and diagnosing acute or chronic malnutrition via BMI-for-Age Z-Score and Height-for-Age Z-Score. Furthermore, it emphasizes the importance of adequate intake of protein, calcium, and vitamin D alongside rehabilitative exercise, advocating for a multidisciplinary approach to full-process management. This consensus provides scientific, standardized, and actionable guidance for clinical specialists, nutritionists, therapists, community health workers, and family caregivers, aiming to optimize nutritional and rehabilitative management for AIS patients and improve their long-term prognosis and quality of life.