This study looked upon a probability of desorption type Yeonsijo through unity, closure, structure, and subject in three text of <Odaeeobuga>(9 Sijo) written by Lee, Jung-kyeong(1599∼1678). The result of this study is as follow; 1. We ascertained the existence of unity and closure made by symmetrical expression, in three text(the first text of the 2-4 Sijo, in the second text of the 5-9 Sijo, the third text of the 1-9 Sijo) of <Odaeeobuga> (9 Sijo), and the existence of unity made by repetitive expression in third text.
2. We ascertained the existence of sequential structure in background time and the existence of sequential and return structure in background space in three text of <Odaeeobuga>(9 Sijo).
3. We ascertained the existence of symmetrical/sequential structure in logic of the first text(the 2-4 Sijo), the existence of symmetrical/ sequential structure(combination of climactic structure and anticlimactic structure) in logic of the second text(the 5-9 Sijo), and the existence of introduction-body in logic of the third text(the 1-9 Sijo).
4. We ascertained the existence of subject, in three text of <Odaeeobuga>(9 Sijo).
According to the result above, We understood a probability of desorption type Yeonsijo, because unity, closure, structure, and subject are found in three text of <Odaeeobuga>(9 Sijo).