Abstract: The climatic characteristics of gravity wave parameters is an important part of the parameterization of gravity waves in the development of global atmospheric model. High vertical resolution sounding data of disturbance fields are the basic data that can be used to obtain climate characteristics of gravity wave parameters. At present, there are many methods to obtain the disturbance field, but there are few studies on the influence of the disturbance field on the calculated climate characteristics of the gravity wave parameters. Based on the high vertical resolution sounding data collected at Taiyuan Meteorological Observatory in Shanxi from 2014 to 2017, the 2—4 order curve fitting methods are used to obtain vertical profiles of temperature disturbance field, zonal wind disturbance field, and meridional wind disturbance field in the lower stratosphere (17—24 km). Statistical analysis shows that the disturbance fields obtained by the second- and third-order curve fitting methods are more similar. Therefore, the second- and third-order curve fitting methods are selected to calculate the atmospheric gravity wave parameters, and the characteristics of differences in the atmospheric gravity wave parameters between results of the two methods are statistically analyzed. The results are as follows. (1) Disturbance fields obtained from different-order curve fitting methods show different amplitudes, different trends with height, and weak correlation; (2) gravity wave parameters obtained by the second-order and third-order curves fitted disturbance fields are different in the size, the annual variation trend and occupancy rate within different intervals, and the correlation is weak; (3) from January to December, compared with the third-order curve fitted disturbance field, the gravity wave group velocity, horizontal wavelength, vertical wavelength, period, and intrinsic phase velocity obtained by the disturbance field from the second-order curve fitting method are larger, and the fraction of upward propagating energy is also larger in some months. Therefore, it is concluded that the disturbance fields from different-order curve fitting methods are different, which can lead to differences in the climatic characteristics of the calculated atmospheric gravity wave parameters and eventually influence the effect of the parameterization scheme in the atmospheric model.