The poetic line is a visual trail showing that poetry is rooted in temporal order, and an explicit proof that the existence of poetry is revealed by the spatial compartment across it. The poetic line is also a vessel of breathing made up of its length as a unit, and the pole of rhythm that consists of jagged differences in its lengths. It exists as a metaphor for spatiality of poetry as well as a metonymy for the its temporality. The lines in the poetry exist like the fields of experiment to find the maximum value of the form that can be implemented through poetry. We sometimes see the segment of the line in the poetic text deliberately overlooked in the discourse dimension. In this context, a line is only mentioned as the result of writing a poem, not its momentum or its basis. So the discussion on the poetic line is still scanty. So I examined the poetic function given to the line and the textual meaning of the line breaking, by examining the process of reading poetry as the text process in the culture of the metrical reading. In addition, I conceptualized the principle of creating a segment of a line in poetry and the principle of organizing and integrating it into the process of poetry again using the concept of phonetic equivalence to reveal how the line relates to the enjoyment of poetry.