The timeframe during which Yu Kwang-chung moved to Kaohsiung in 1985 and stayed until the December of 2017 when he passed away is called the Yu’s Period of Kaohsiung. It is during this period of 32 years that Yu resided in Kaohsiung and worked for Kaohsiung. He started to write on Kaohsiung, and participated in a great variety of literary and cultural activities, immersing himself in the creative writing on a plenty of local themes and making himself like a “local person” of Kaohsiung. In poetry, during this period of time Yu published six volumes of poetry; they are Dream and Geography (1990), The Pomegranate (1996), Soil, Metal, Wood, Fire, and Water:Reincarnation (1998), A High Building against the Sea (2000), The Lotus Deity (2008), and The Sun Calling His Children (2015), totalizing 389 poems, with 90 of them on the theme of Kaohsiung spread over the respective volume. The theme of Kaohsiung embodied in Yu’s poems covers various topics ranging from local people, plants and creatures, social and political affairs, all the way to the ecological and environmental concerns. Thus, Yu’s literary work has become a valuable cultural asset to Kaohsiung, witnessing the multifaceted outlook of Kaohsiung. In contrast with Yu’s poems of his two other periods of Taipei (1950-1974) and Hong Kong (1974-1985), which are characterized by the Chinese Consciousness, his creative writing on the theme of Kaohsiung serves to justify his claim of the “ Period of Localization.” Focusing on Yu Kwang-chung’s poetry writing on Kaohsiung, this dissertation contains by topic three main parts: People and Affections, Writings on Mother Nature, and Social Concerns, with an aim to demonstrate Yu’s affections for and identification with local people, things, and affairs of Kaohsiung.