|Modern people live in the shrinking global village. In order to avoid the happening of the world disasters, people have to have the same understanding in many ways to survive. It is an important issue to build a common standard --- “World Ethics” as a common norm of restrictions. The major religionists and philosophers in the world all raise their perspectives toward the building of “World Ethics.” Neo-Confucianist, Professor Liu, Shu-hsien, used the rich resources of the Confucian as the base, to search the wisdom from the tradition of the Confucian. He pointed out “Liyi Fenshu” as the direction and principal of the establishment of “World Ethics.” The researcher will use his theory as a base, first trace back the founding and discussion of “Liyi Fenshu” by the Confucianists of the Sung Dynasty and the Ming Dynasty. Second, the researcher will analyze Chu Hsi’s accomplishments toward the theory of “Liyi Fenshu.” Third, the researcher will apply Chu Hsi’s theory to the discussion of the possible problems of building “World Ethics.” This paper, in one way, wanted to confirm the positive meaning of the application of “Liyi Fenshu” in World Ethics, on the other way, it wanted to point out the improper of this theory. Then, we can avoid the off-track of the goals and the ideas.