After inspecting the rapid development of modern science and technology, it is a very important task for us to reflect on the meanings of various kinds of Humanism. While contemporary Humanistic thoughts show different features, the writer can't give a comprehensive analytic comment on all of them in this relatively short paper. Therefore, we just introduce two kinds of Humanism: T'ang Chun-I's “Complete Humanism” and Jacques Maritain's “Integral Humanism.” The former is Anthropocentric Humanism while the latter is Theocentric Humanism; they are close in the ultimate concern of “the unity of Heaven and Man,” though there are still some differences in between.