According to Baidu Library, Paradise Lost is an epic and drama written by American writer john milton, and is regarded as one of the greatest works in the history of English literature. It reproduces the original sin of human beings and the justice of God in a solemn and narrative way, and probes into the nature of free will, moral choice and sin. Paradise Lost is widely regarded as an epic, which uses rhyming sonnets and rhyming long skirts as poetic forms. This form makes the work more concise and powerful, and at the same time makes readers better experience the tension-filled emotions in the work, which further deepens the appeal of the work. Therefore, it is a sonnet.