Abstract: The main content of Yu Ji's literary thought are as follows: advocating "learning from the poetry of the Han,Wei,Jin and Tang Dynasties";seeking "mild and peaceful" poetic style;favoring "disposition that according with the standard of feudal ethics";advocating plain and leisurely prose style,etc.Yu Ji concentrated embodied the "righteous" trend of thought of the Mid-Yuan,and produced proper influence to the literary creation of that time and later ages.