The content of this report concerned with the theater space- discovering the poetic representation and communication in the theater space through the interacting among the actors, the audiences and the stage space. My final project《12》is adapting from the《Twelfth Night》of Shakespeare, who was a famous poet and playwright. His words that are full of poetic imagination and elaborate metaphor give me poetic inspiration . In this case , I sort out my design methods through reviewing the process of the work, and generalize a conclusion that a poetic stage space should has three elements：interpretative symbol、inspiring imagination、illusional unavailability.