Chaucer's poetry creation can be divided into three periods: ① French influence period (1359 ~ 1372): he mainly translated and imitated the works of French poets, created The Duchess's Book (1369), and translated the French medieval narrative poem The Legend of the Rose in London dialect. ② Italian influence period (1372 ~ 1386): The poet was exposed to the progressive thoughts of bourgeois humanism. His works during this period, such as The Hundred Birds Congress, troilus and Criside (C. 1385) and The Story of a Good Woman, reflect the author's creative attitude and humanistic viewpoint in the face of life reality. ③ Maturity (1386 ~ 1400): Chaucer wrote The Canterbury Tales in the last 15 years. He reached the peak of his creation in both content and skill. Heroic couplets initiated by him were widely adopted by later English poets and were known as "the father of English poetry".