Poetic drama is an important style in the west, but modern Chinese poetic drama is in an awkward situation of being ignored, compared with other genres, such as new poetry, novel, drama and prose. The situation of the left-wing poetic drama, located in the inner edge of left-wing literature, is extremely lonely. The Left-wing poetry drama is one of the important achievements of left-wing literature, and its genre paradigm is unique. However, the mixed character of style is not only the reason why left-wing poetry drama has been ignored for a long time, but also the source of its embarrassment. The genre paradigm of left-wing poetry drama includes three forms, including "dramatic poetry", "drama of pure poetry" and "drama of prose poetry", which shows its unique aesthetic quality. This paper makes an in-depth analysis and interpretation of the three genre forms of left-wing poetical drama, in order to historically and comprehensively analyze the creation mode, aesthetic paradigm and development rules of left-wing poetical drama.