Modern poetry and ancient poetry are two different types of literature, each with its own unique characteristics and development process. Ancient poetry originated from ancient Greek and Roman lyric poetry, which developed into modern poetry through medieval knight poetry, Renaissance essays, and romantic poetry. Modern poetry originated in the early 20th century in the United States, experienced the development of modern, post-modern and other schools, and finally reached its peak in the 1950s. The forms of modern poetry were more diverse, including free verse, short poem, long poem, narrative poem, lyric poem, etc. The theme of modern poetry was also more widely involved in society, politics, culture, nature, human nature, etc. In contrast, modern poetry developed even more rapidly. From the 1930s, many American poets began to try to create poems with more freedom in form and content. In the 1940s and 1950s, many modern poets created the new modern poetry school by praising the theme of selfishness, anti-culture, anti-utopia, etc. In the 1960s and 1970s, poetry began to reflect on social reality and the meaning of human existence, forming the post-modern poetry school. In the 1980s and 1990s, modern poetry became more diverse, including expressionism, symbolism, expressionism-regressionism, neo-expressionism, cultural poetry, electronic poetry, etc. Modern poetry and ancient poetry have great differences in form, content, theme and style, but they all reflect human thoughts and feelings about life, love, nature, society and so on.