|The number of poems about or related to Buddhist monastery by Tang literati or monks is amazingly large, occupying more than one-tenth of the whole corpus of Tang Poetry. In addition, it was common custom that the Tang literati was frequently visiting or living in Buddhist temples. The analysis of the poetry written on or about Buddhist temples therefore can not only help us to understand the social life and cultural atmosphere of the time, but also help us to further observe the development of different writing styles of Tang poetry. As eminent scholar Yen Keng-wang once remarked that there existed a so-called Changan cultural area, this article attempts to look into the poetry related to Buddhist monastery surrounding Changan neighborhood, including Mountain Chungnan, and posits the idea that the monastery poetry of Changan has three characteristics: from realistic to philosophical in scenery description; from appearance to ecstasy in realization of the Buddhist style; from deliberate to easy and oral in language. The author hopes, in the final analysis, to offer an observation of the transformation of styles in Tang poetry through the study of the monastery poems of Changan.