Abstract: WEN Yiduo wrote letters to relatives and friends to record and comment on a lot of things, among which the most worthy of our attention are "records" and "comments". In addition to the contents concerning literature, scholarship and art, the other three aspects of records and comments should also be paid special attention to, that is, about the May 4th Movement in the early 20th century, WEN Yiduo's participation in the anti-japanese war and WEN Yiduo's study in the United States.