In Vietnamese history, the Le dynasty (1428 - 1527) was the period of achieving the most brilliant achievements in national construction and development - considered the culmination of the development of the Vietnamese feudal regime. To gain that position, the Le dynasty focused on building a strong centralized state and exercised social management by law, associating the building and consolidation of Confucian ideological institutions with the implementation of bureaucracy as a central task. Many guidelines, measures and regulations related to training, recruitment, promotions, bonuses, salaries ... of the officials have been issued, in order to bring about effective results. The content of the book is presented in three chapters: Chapter 1: Overview and basis for building the Le dynasty mandarin regime; Chapter 2: The mandarin regime of the Le dynasty (1428-1527); Chapter 3: Reference values for civil service reform in Vietnam today.