As an important type of ancient poetry， “Buddhist Poetry” has been walking on a way of blending poetry criticism and Buddhist meditation. Having experienced the primary period of “Buddhism is Buddhism， poetry is poetry， and there always be an estrangement between poetry and Buddhism”， the blending period of “similar in the form and no distinction between form and spirit”， and the harmony period of “freely getting into and out of the dimension of Buddhism and poetry”， it had finally developed into an important criticism mode in Song Dynasty.