The establishment of imperial examination system is the need of centralization and the inevitable result of the development of scholar selection system. After the Sui Dynasty unified China, in order to strengthen centralization and consolidate reunification, the reform of the official system and the official system was first strengthened. This is because: (1) to strengthen centralization, the power to select talents must be concentrated in the hands of the central authorities; (2) In order to consolidate the rule, we must try our best to win over intellectuals and provide them with opportunities to participate in politics; (3) With the unification of the country and the increasingly complete feudal bureaucracy, it is necessary to select a large number of talents who meet the needs of feudal unified politics as officials at all levels. As a result, Emperor Wendi of Sui Dynasty officially abolished the "Nine-grade Zhong political system" and selected talents according to the inspection system. In the second year of Yang Di's great cause, the imperial examination was established, which marked the establishment of the imperial examination system. The system of selecting talents by subject examination in the Tang Dynasty was gradually customized, and it was implemented in the history of China for 1300 years, which had a great influence on education. The imperial examination system is a great progress in the system of selecting scholars, which corrects the disadvantages of the imperial examination system and the Nine Grades system, such as uneven opportunities, no objective standards and subordinate power in selecting scholars. The imperial examination system is different from the imperial examination system and the nine-product system. It is open to the public and provides every scholar with equal opportunities for competition.

(1) The establishment and implementation of the imperial examination system really played an important role in strengthening centralization and consolidating unity. (2) The establishment and implementation of the imperial examination system had a direct and far-reaching impact on education.