Abstract: Xi Jinping’s important exposition on “never forget the mind and remember the mission” is a time proposition with rich contents and profound implications, which embodies strong historical, theoretical and world values. The profound historical value of Xi Jinping’s important exposition on “never forget the mind and remember the mission” is that it has summarized the Party’s experience of centralized education during its century of development, identified soberly problems within the Party, and provided institutional compliance for governing the Party according to the rules and regulations of the Party. Its solid theoretical value is that it has opened up new horizons in Marxist-Leninist primordial theory, enriched theories of party building and constituted an important chapter of Xi Jinping’s thought on socialism with Chinese characteristics for a new era. Its broad world value by presenting a good image of the Chinese Communist Party to the world, increases influence of the proletarian party and provides Chinese experience for national political parties to strengthen their own construction.