The 11th revision of International Classification of Diseases （ICD-11） introduces annoveldiagnosticsystem for personality disorders， encompassing a global severity dimension and specific trait domains. This review synthesizes the global research advancements on this new diagnostic， encompassing the development of assessment tools， the correlation between the new diagnostic system and traditional categorical systems， and the clinical advantages observed. The aim is to provide Chinese mental health professionals with a comprehensive guide for understanding and implementing the ICD-11 personality disorder diagnostic system in clinical practice.