"Saying good bye before a dawn" is the poetry to which a turning point in the time from the Taisho last years to the Showa beginnings and Shigeharu Nakano`s adolescence were announced time intermingled in all. I`d like to reconsider about the time like circumstances and social phenomenon through this poetry by this publication. His Proletarian lyrics were published, and were compared with common Proletarian poems that expressed infertility and a dry cry. They were not just an exclamation of ideology. With regard to the history of poetry in modernity, they heighten contemporary sufferings to a fulfillment of emotion that common Proletarian poems ignored. His literary small adolescence sprouts up at the literary ground where the feeling poetry party in the Taisyo period is made the center, and is that it grew naturally. He connects with Marxism thought and practice while coming into action by "Sinzinkai New Man Society" and "Marxism art workshop" in college days, and a poetic word starts to touch description of feelings and a thought gradually. He comes to be advancing towards the world of proletarian poetry further. On the other hand, the maturity process of his poetic word piles up and is repeating it in multistory way. A new poetic word is being created through various experience in his growth process. "Good bye." "flower", "celluloid toy" a poetic word of etc. looked for a symbol about the time aspect which is being done and a social aspect. Shigeharu Nakano had the interest to something subtle truly as a proletarian Poet. He finds out that a matter is being drawn valuably by the form of some level. His Proletarian poems that have lyrical, satiric and beautiful poetic words will always remind us of NAKANO, who has played a chief role in social intercourse literature, and has been familiar with readers as a Proletarian poet.