This article lays emphasis on how Wang An-Shih(王安石)used rituals to regulate human relations in "the Classic of Poetry". Through this way, we can see how rituals assisted people in establishing the order of human relations and developing the spirit of rituals. Zheng Xuan(鄭玄)in the Han Dynasty was the first person to use rituals to build up human relations of "the Classic of Poetry". Then Ou Yang-Xiu(歐陽修)in the Sung Dynasty shared the similar perspectives in his book entitled "the Original Meanings of the Classic of Poetry". However, Wang An-Shih was actually the first person to insist that rituals should be used to elucidate and regulate human relations. Wang An-Shih thought that the historical materials of human relations were recorded in "the Classic of Poetry". Rituals helped people to establish social order and set up human ethic, and thus both "the Classic of Poetry" and rituals were closely related.