Abstract: In the 4th year of Chongzhen, Ming Dynasty,in southwest of Yizhen County, a garden was designed and constructed by JI Cheng for WANG Shi- heng. It was given the name of Wuyuan. But the name of Wuyuan disappeared soon. Other names, including Xiyuan, Rongyuan ( 荣园), Wangyuan, Rongyuan(容园), and Minyuan appeared in the area where Wuyuan had been built. This puzzled scholars. The research shows that these names were the different names of the same garden in different times . Wuyuan was the original name, and Xiyuan was the name according to its location. In Qing Dynasty, the name of this garden was changed into Rongyuan( 荣园) . Then it was named Wangyuan after the owner the Wang family. The name was changed into Rongyuan( 容园) after it was sold to Min family. It was also known as Minyuan because of the family name of its owner.