Abstract: The royal rear garden in Bianjing of the Jin Dynasty was considered to be a physical heritage from Dongjing of the Northern Song Dynasty. After Comparing and analyzing a large number of literatures, it was found that the royal rear garden built in Dongjing of the Northern Song Dynasty was burned out in the regin of Wanyan Liang, and the royal rear garden of the Jin Dynasty was reconstructed in the period, whose orientation, style and architectural concept had been changed. In the Northern Song Dynasty, the quantity and volume of buildings in the royal rear garden were large, artificial mountains were not very prominent, which were almost mounds and were displayed strong political imagery, resonating with the style of royal gardens the Sui and Tang Dynasties. The quantity and volume of buildings in the royal rear garden of the Jin Dynasty decreased significantly, and large-scale artificial mountains were adopted, and political functions were weakened. The differences between garden styles were related to the function, status and construction times of them. The uniqueness of the architectural style for the royal rear garden in Bianjing of the Jin Dynasty verified the existence of Kaifeng Royal Garden in the Jin Dynasty.