Based on analyzing the development and distribution of Yellow River terraces in Lanzhou city, using the high-resolution differential GPS measuring and DEM （1：10 000） mapping data, the terrace map and profiles along and cross the river are gotten. Complaining with the dating results of the different grade terraces, the tectonic deformation characters of the terraces are studied, and the quantitative parameters of terrace deformation characters, the widths of deformation zones, the extents and velocities of deformation in active fault zone are obtained. In conclusion, it is indicated that folding effect plays major role in tectonic deformation of Lanzhou Basin in late-Quaternary, while tectonic activity of faults has been not clear since that time.