Diary of a Newlywed Poet is a poetic word with characteristics of a "true diary" and its own peculiarities. From a metric point of view, Juan Ramón Jiménez not only uses the free verse, but also introduces a great amount of poems in prose. However, in some of these texts, traditional metric elements are clearly showed, although sometimes with some exceptions. In this sense, the present paper offers an analysis of these elements from a syllabic and rhythmic perspective. In the first part, a general vision of Spanish poetry´s metric elements will be studied; and posteriorly, it will investigate how some of these elements are applied in the poems of Diary of a Newlywed Poet. Therefore, this study will help to stimulate greater interest in Spanish poetry among Asian readers and encourage criticism from experts in the field of literature, especially in the field of literary comparison and contemporary poetry.