This article's discussion about value philosophy proceeds in the context of the value of Chinese philosophy, with emphasis on the methodological issues about the formation of value philosophy. The theme of the article is the complementarity between Confucianism and Taoism, pointing out that such a complementarity is a phenomenon of life and could become a doctrine. Such a complementarity shows in the fact that the Confucian value of “ren-yi” and the Taoist value of non-action are complementary to each other. In the history of the philosophies of Confucianism and Taoism, we can also find doctrinal examples about the complementarity between “ren-yi” and non-action in the development of Confucius's philosophy and Laotze's philosophy. In this article the writers explains how “ren-yi” and non-action are combined. For Confucius's philosophy, the complementarity is “ren-yi” in essence and in non-action in state, while for the Laotze's philosophy, it's non-action in essence and “ren-yi” in state. However, since the cosmology of Zhuangzi's philosophy is different from that of Laotze's, it's not appropriate to say Zhuangzi's Taoism is complementary to Confucianism. Theoretically, the ideal complementarity implies parallel cosmologies and interflow of value proposition; therefore, the values of the two philosophies can be mutually acceptable and put into practice in everyday life.