Explanations of poems in Shih Ching by scholars in ancient times are diversified. If we want to grasp the real meaning of the author, we must make a breakthrough for those obstacles such as ancient language, systems, writing skills and environment of speech, etc. This article is taking the poem Tsi FungNan Shan(齊風南山) for an example, by analyzing its writing background and skill in order to gain the thesis of this poem. In this writing, I emphasize the method Ch, ung Chang Hu Tsu(重章互足) of Ch`ung Chang Fu T`a(重章複沓). By this doing, I believe that the contradictory opinions from ancient times up to now can be solved.