Cleverly using a variety of fiction techniques, Luo Guanzhong successfully created the characters in his "Romance of the Three Kingdoms", with each one of them bearing a unigue charm and image. However, as a historical novel, many characters and episodes in "Romance of the Three Kingdoms" were distorted, such as "the Battle of Red Cliffs," "Three visits to the thatched cottage," "Borrowing arrows with thatched boats," "Kung Ming borrowing the east wind," etc. This paper will discusss the differences between the characters in "Romance of the Three Kingdoms" and those recorded in The Records of the Three Kingdoms and other historical records, such as Cao Cao, Zhuge Liang, Guan Yu, Liu Bei, Zhang Fei, Zhou Yu, etc. , in order to clarify the historical reality of the stories in "Romance of the Three Kingdoms".