The poem "The Flea" was written by Donne when he was in his 20s. This is a comic poem that fully demonstrates the poet's ability to use metaphysical analogies. The idea of ??a connection between fleas and lovers does seem novel. In the history of world poetry, people always use beautiful images and gorgeous verses when singing about love. For example, "Song of Songs" uses endless metaphors to praise the other person in order to win the other person's favor; or it uses images such as the bright moon and bright red roses to praise love, such as Su Shi's "I hope people will live long and live thousands of miles*" "**Chanjuan" is used to express longing and longing for reunion, such as Burns, who uses "flaming red roses" to praise his Scottish girl, and even unrepentant love to win the other person's favor. Even Herrick, the metaphysical poet of his time, compared girls to flowers and expressed the principle of "carpe diem" in verses such as "pick while you are young".
This poem "Flea" is very different. It uses the "fleas" that often appeared in the daily life of the British people in the 17th century but were disgusted by the sight of them. Sacred love is linked to marriage, and the image of a flea is used as a symbol of sexual love to achieve the purpose of persuading the other party to fall in love.