Abstract:This paper starts with the structural features of the three examples of the corridor-style Dugan in Xihuang Monastery, Beijing, Shir-a Monastery, Inner Mongolia, and Amarbayasgalant Monastery, Outer Mongolia, and discusses the architectural form of the distinctive corridor-style Dugan in Tibetan-rite Buddhist monasteries. It then points out that the structural form of the Dugan was probably an emulation of the Vhara in the Jokhang monastery, rather than an imitation of the White Palace of Potala Palace, as historical materials believed. It finally discusses the influence and the development of the corridor-style Dugan in the great Qing Empire.