Abstract: Economic and philosophical manuscript of 1844 is the birthplace and secret of Marx's thought of beauty. Marx depicted the real realistic picture of human being's construction of beauty in the theories of “humanized nature” “objectification of essential power” and “positive sublation of alienation”. This paper focuses the six major questions of Marx's thought of beauty: the ontological subject of beauty, the realistic foundation of beauty, the level of beauty, the feeling subject of beauty, the historic of the beauty of capital modernity, and the realization of beauty so as to reveal the essence of Marx's beauty and explore the contemporary appeals of “Beautiful China” construction.