The "analyzing poetics metaphorically with Zen" is an empirical analogical thinking.Both "Zen",which involved in Zen saying、method、interest、sect、excellent idea of the Zen and the novel of complex legal case,and "Poem",which include poet、school、works and reader,are complicated.The "allegory" means comparing the Zen with the poem to explain something about the poem.This paper tries to find why can we and how to analyze poetics metaphorically with Zen to take the "Cang lang’ s Notes on Poets and Poetry" for an example