Ocean poetry has a very important position in the early creation of Cheng Chouyu. In his total thirty-three ocean poems, there is 63.6% of all are concentrated in his earlier book ”Cheng Chouyu poems collection I: 1951-1968”. Immediately after the publication of Qin Zaihao's ”Ocean Poems”, Cheng Chouyu's ocean poetry set very early the conerstone in Taiwan ocean poetry writing. This article is divided from the four aspects-imagery, theme, language and device to further explore the connotation of Cheng Chouyu's ocean poetry.