Cao Cao's poems can be divided into four-character poems, five-character poems and miscellaneous poems. Today, his four-character poems, including Looking at the Sea, Turtle Singing and Short Songs, are well-known masterpieces, which push China's four-character poems to a new peak. Cao Cao's poems can be divided into three categories in content. A kind of poetry truly reflects the social reality of unrest and people's poverty in the late Han Dynasty. Some poems express his ambition to make contributions and unify the world; One kind is immortal poetry.