《与元九书》中白居易极力提倡的“文章为时而著”文论观是儒家文学工具观极为功利化的体现,它显示了白氏在文艺理论上的偏激性。每种文学现象的出现,都有深刻的社会历史和文学自身发展变化的背景,我们要理清白氏诗论,就必须对那个儒学边缘化时代进行深入细致的研究,尽量去体会诗人的情感对其文论及创作的影响,其偏激性反映了中唐文人的社会良知 Literary Theory Viewpoint is a very utilitarian manifestation of the Confucian view of literary tools, which shows Bai’s radicalism in the theory of literature and art. The emergence of each literary phenomenon has a profound background of social history and the development and changes of literature itself. If we want to sort out Pak’s theory of poetry, we must conduct an in-depth and meticulous study on that era of marginalization of Confucianism and try to understand the emotion of the poet Its influence on literary theory and creation reflects the social conscience of the literati in the middle of Tang Dynasty