Abstract: The Puyuan garden in the Qing Dynasty was famous in Yizheng county and constructed during Emperor Jiaqing period (1796-1821). The owner was BA Guang-gao of a salt merchant family. Roughly, it was located in the hill area of northern Yizheng city, and its layout was referenced from YUAN Mei' Suiyuan garden. The large rockery in the garden was designed by the famous architecture GE Yu-liang, thus it was recognized as " The top 1 garden in the south of the Yangtze River ". Unfortunately, it was burned during Emperor Xianfeng period (1851-1861) and declined quickly. The Puyuan garden bore rich cultural information about Yizheng's ancient gardens and had great relic value. Therefore, initiated by Mr. CHEN Cong-zhou, some scholars have been attempting to have field investigation and look for the ruin for determining its exact location. However, because of inconvenient transportation to there as well as big changes of administrative divisions and land forms, the determination of its exact location was extremely difficult. Here based on the huge amount of collected literature and field investigations and via literature analysis and logical inference, we determine the exact location of the Puyuan garden to be in Xiwa group, Aiguo village, Maji town in current Yizheng city.