The poetry collection named after Leaves of Grass embodies the poet's democratic thought, because it gives the most common trampled little thing lofty status and dignity. Leaves of Grass is also an American "newcomer" image with strong vitality, including poets, which symbolizes the unique American spirit and character. One of the famous poems is "Captain, my captain!" My own song and so on. The free style of this collection of poems is unrestrained without losing the aesthetic feeling of music. It is unique in English poetry, which fundamentally shook the monopoly position of traditional metrical poetry for centuries, initiated the rapid development of English poetry in the 20th century, and had a great influence on China's new poetry creation after the May 4th Movement.