Du Fu, a prominent Chinese poet, said "Poetry has a significant influence on our family", and devoted his life to poem-composing. Among the poetry composed by Du Fu, Lushi played an important role and was the representative of the magnificent Lushi art in Tang dynasty. Later on, it led to the development of poetry in Song dynasty. This thesis is going to explore Du Fu's artistic attainments in "Wu- lu- aolian". Besides admiring the important role Du Fu's poetry played in the developing process of classic poetry, it tends to tell the contemporary poets the application of " ao-jiu" form for "ping-qi-lian" in Lushi writing, it can avoid the limitation of " the tonal pattern for jin-ti-shi" which has been studied since Qing dynasty.