The strengths of authoritarianism in East Asia refer to some of the advantages that authoritarian regimes may have over other political institutions in specific situations, such as contributing to social stability and efficient decision-making, and promoting the economic development of the country to a certain extent. However, it needs to be made clear that these advantages are also subject to certain prejudices and limitations. Although some economic and social development policies were implemented to some extent by authoritarian regimes in East Asia, its drawbacks and negative impacts cannot be ignored. Authoritarian regimes have posed challenges to civil liberties, human rights protection, political repression, corruption and social inequalities, and have negative impact on social stability and sustainable development. Therefore, it is necessary to look at the advantages and disadvantages of East Asian authoritarianism dialectically, analyze comprehensively, and explore its development trends on this basis. This paper completely analyzes the strengths, weaknesses, and development trends of East Asian authoritarianism through a dialectical approach, in order to acquire a deeper understanding of the system developed by a variety of factors.