The proletarian internationalism consciousness refers to the self-awakening and political claims of the international proletarians alliance, the class status and the class mission of the international proletarians from the revolutionary leaders, such as Marx, Engels, Lenin, Stalin and Mao Zedong. Internationalism is a historical category, which has played a big role in leading the world proletarian workers movements. However, it has its limitations. Since the founding of the new China, the CPCs leaders have formulated diplomatic policies based on the international and the domestic situations, which is of important significance in improving the CPCs images and changing the international existence circumstance of socialist China.