Abstract: Jiuzai-Huanglong airport is characterized by high filling, high seismic intensity and high altitude. One important engineering problems of this project is the Deformation of high-filling foundation. Based on the study of various seismic analysis methods, carried out with Fast Lagrangian Analysis a research on the seismic Doformation of Yuanshanzi Gulley section is of Continua systemically, and obtaining some practical results.