The SanJie Buddhist Order, which was active during the Sui and Tang Dynasties, was a self-established religious order in China. About the study of the inheritance of the SanJie Buddhist Order, most scholars have taken the founder of the Order, Xinxing, as an important subject of study, and have made a detailed study about his life and teachings, but the changes within the Order after Xinxing's death and the investigation of his disciples are only for holistic research. Therefore, Sengyong who was the second successor after Xingsing in the SanJie Buddhist Order is selected as the main axis of this paper. He was an important figure in leading the SanJie Buddhist Order through the internal and external chaos. From the perspective of the historical development of the SanJie Buddhist Order, in the ninth year of KaiHuang, Xinxing was ordered by Emperor Wen of the Sui Dynasty to enter Beijing. He went with Sengyong and passed away on the fourth day of the first month of the fourteenth year. In fact, XinXing entered Beijing and found the SanJie Buddhist Order for only five years at most, and then SengYong took over as the leader of the Order after his death. In the early days of succession, Sengyong faced major challenges including a split among his disciples internally and the first ban on the spread of the SanJie Buddhist Order issued by Emperor Wen of Sui in the 20th year of KaiHuang. In the chaotic situation, Sengyong, with a great capacity for stabilizing the Order, was particularly important. He not only led the Order to overcome the crisis of split, but also safely resolved the first ban on the spread of their teachings. In the fifth year of the Tang Dynasty (631), he was honored by Emperor Taizong after his death. It shows that SanJie Buddhist Order has not been declined by the blows of the Sui Government. On the contrary, there was a growing trend. With the focus on Sengyong, the discussion of the early development of the SanJie Buddhist Order will be able to provide diversified understandings of it’s historical development and explore the connection among the disciples in the Order. Moreover, the teaching about Pure Land Buddhism has been found in the practice of Sengyoung and his disciple, Demei, though the SanJie Buddhist Order is often criticized by Pure Land Buddhism. In comparison with the thoughts and practices of Sengyong's teachers, Sengyhou and Xinxing, and Demei, it seems that the doctrine of the SanJie Buddhist Order is not as opposed to the practice of the Pure Land Buddhism as stated by Pure Land Buddhism.
