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In the Spring and Autumn Period, the main function of The Book of Songs was not literary. In addition to the official ceremony of the court, its social functions are divided into two categories: "Fu" and "Yin". The so-called "poem-writing" is mainly used in formal diplomatic occasions, such as the ceremony, engagement and alliance. Both the guest and the host express their respect or desire by reciting the chapters in the Book of Songs. Such as Zuo Zhuan? Twenty-three years of Xianggong recorded that Zhong Er, the son of Jin Dynasty, met Qin Mugong and was supported by Qin Mugong. The son made a mistake:' I am not as good as the article of decline. Please fail.' Gongzi wrote River Water and Gongfu wrote June. ..... "Through different poems, the two sides reached a major diplomatic decision tactfully and honorably, showing the elegant and gorgeous side of politics in the Spring and Autumn Period. The alliance requires that "songs and poems must be of the same class" ("Zuo Zhuan? Sixteen years of Xianggong), that is, it conforms to the identity and the political atmosphere at that time. Otherwise, it may lead to crusade, which shows the importance of poetry in diplomatic activities. Another function of fu poetry is to express one's will. "Zuo zhuan? "Twenty-seven years of Xianggong" contains: "Zheng Boxiang enjoys Zhao Meng's presence in the dragon, Zi Zhan, Bo You, Zi Xi, Zi Shu, and Er Zi Shi Cong. Zhao Meng said:' The seven sons are obedient to the king and spoil the martial arts. Please bestow on them the title of a pawn, and the martial arts also have the ambition of observing the seven sons. " "The following seven ministers of Zheng all wrote poems, and Zhao Meng and Shu Xiang judged the mood and fate of the poets one by one through their poems. This fact shows that in the Spring and Autumn Period, people believed that poetry had some mysterious nature, which could show the mental state of the poet. "Fu Poetry" is a social function derived from the ritual features of poetry, which implies people's reverence and belief attitude towards poetry. "Quoting poems" refers to quoting chapters or sentences from the Book of Songs in comments, so as to find the basis or strengthen the persuasiveness of one's words. "Poetry quotation" is relatively free, which shows more the classic accomplishment of the quotation. For example, in the sixteenth year of Xuangong, Jin Yangtongue was appointed as the general of Zhongjun, saying, "I heard that' Yu is called a good man, but he is not good at others', which is called a husband. "Poetry" says, "Being afraid is like walking on thin ice." Good people are also in the world. If good people are on the scene, the country will have no good people. As the saying goes,' the people are fortunate, but the country is unfortunate.' It is said that there are no good people. "That is, the sentences in the Book of Songs are used to comment on the moral character of scholars' associations. According to statistics, there are more than 82 quotations in Zuozhuan [1], which shows that familiarity with the Book of Songs has become the necessary knowledge for aristocratic literati to communicate. Therefore, Confucius said that "if you don't learn poetry, there is nothing to say" (The Analects of Confucius? Ji's). The Book of Songs is regarded as the basis of reasoning, and it is also related to the sacred historical background of the Book of Songs. In addition, The Book of Songs was also used as a teaching material in the Spring and Autumn Period to cultivate the political ability of princes and nobles or scholars. Book of Rites? "Wang Zhi" says: "Yue Zheng worships four techniques and establishes four religions, and follows the previous kings' Poems, Books, Rites and Music to make scholars. In the spring and autumn period, Li and Yue were taught, and in the winter and summer, Poetry and Book were taught." Confucius also said that through the Book of Songs, you can learn that "your father is the thing that matters far away" (The Analects of Confucius? Yang Huo "); During the Warring States period, it was mainly spread as an academic, which was interrupted by Qin Shihuang's burning of books and burying Confucianism, and continued to this day after it was recited and written by scholars in the Han Dynasty.