Neurodevelopmental disorders are a group of conditions that originate in early childhood and affect cognitive, language, motor, and social functions. They include intellectual developmental disorder, autism spectrum disorder, attention deficit hyperactivity disorder, and others. The release of ICD-11 CDDR has provided a new framework and guidance for the diagnosis, classification, and clinical management of neurodevelopmental disorders. This expert review focuses on the classification of neurodevelopmental disorders under the ICD-11 CDDR framework, diagnostic procedures, multidisciplinary collaboration models, and intervention principles, aiming to serve as a reference for relevant professionals.