Abstract: In the transition from the poetic circles of the Prime Tang Dynasty to the poetic circles of the Middle Tang Dynasty,the importance of Gu Kuang has been ignored.He himself experienced these two periods.His poems,especially the song-form poems had a vigorous spirit of the Prime Tang Dynasty,and became a “living fossil” for the later poets.The existing of the 51 song-form poems of Gu Kuang had plentiful themes,and the song-form poems of music and painting accomplished the highest achievement.Gu Kuang's song-form poems of painting broke the normal format created by Du Fu and expanded the scope of performance of the poems of painting.What's more,Gu Kuang created a new humorous style of poems of painting:Gu Kuang's song-form poems of music paid attention to the emotional expression and imposed a profound impact on Bai Juyi's and other poet's poetry of music.In addition,Gu Kuang's song-form poems also had features of being “vulgar” and “odd”.The “vulgar”side influenced the later poetic school of Bai Juyi and Yuan Zhen that paid great attention to realism and pop art.The poetic school of Han Yu and Meng Jiao however inherited the “odd”style.It can be said that Gu Kuang had imposed a heavy impact upon the poetry circles in such a transitional period that he became a real model for other poets to follow.

Key words: Gu Kuang:Song-Form poetry:Prime Tang character, prelude of being vulgar and odd:the significance in the history of poetry