Yu Ji was a famous writer, historian, educator and official of the Southern Dynasties in Yuan Dynasty. There were many imperial ceremonies, imperial edicts and books in the middle and late Yuan Dynasty. It is also unique in discussing politics, education, papers and classic interpretation. In terms of poetry, he, together with Yang Zai, Fan Yi and Gillis, is called "the four great poets of Yuan Dynasty" and is regarded as the first of the four great poets by contemporary people. The content of Yu Ji's poems is mostly about sighing for the old and being modest and retiring to the countryside, which may be related to his exclusion from North Korea. However, due to the aesthetic decision of "slow and indifferent". Poetry lacks broad social content, with a clear style and mellow rhythm. Some schools of poetry are relatively calm, such as untitled, sniffing, encountering topics in winter, listening to the rain and so on. , showing a hazy realm and elegant picture, giving people a peaceful and quiet impression. In the Ming Dynasty, Li Dongyang appreciated this poetic style of "gathering flowers with hidden front" and "walking beads". Wang Shizhen in Qing Dynasty was the first poet to recommend Yu Ji in Yuan Dynasty. Today, there are more than 20 poems written by Yu Ji, most of which describe personal thoughts and feelings, lack social life content, and the description of the scenery is also unremarkable, but "Apricot Flowers and Spring Rain in the South of the Yangtze River" in "The Wind Into the Pine" can be described as a stroke of genius.
Yu Ji's prose, together with Huang Cheng, Liu Guan and Xie Si, is called "four outstanding figures in Yuan Dynasty". Most of them are official entertainment texts, imperial books of ancestral temples, and inscriptions of doctors and princes. But there are also some biographical articles that show the author's thoughts and temperament. Such as Answering Liu Zhixin and Visiting songji. Some epitaphs can also write characters and personalities, such as Zhang's epitaph. This style is deeply influenced by Wen Song.
Yu Ji has a large number of books handed down from ancient times. The most widely circulated are Ancient Records of Taoist Gardens and Taoist Gardens, some of which are not found in Ancient Records of Taoist Gardens. There are also many meta-editions, such as Daoyuan's posthumous work, Hanlin Zhuyu, Bo Shi Sheng Hou, etc. The Ancient Records of Daoyuan Studies was compiled by his disciples, with a total of 50 volumes, including poems and literary works. In 2007, Tianjin Ancient Books Publishing House published The Complete Works of Yu Ji edited by Wang Xiang.