Researching on the route of spring nabo (捺钵,camp migration and hunting activities of the emperor) is important to study four seasons nabo in Liao Dynasty. This paper investigates the sites of the spring nabo of each Liao emperors, describes the routes, and then discusses their total change rules. The original routes of the spring nabo is around traditional Khitan living area like Huang(潢) and Tu (土) rivers, subsequently transfered to Nanjing area in the south and gradually moved to Liaodong (辽东) area. After the second year of Taiping (1022),the spring nabo's route transfered to Changchun town where is full of water network, and became a convention at last. Through the above investigation, one can find that the change of route is influenced by both political and natural factors of Liao Dynasty.