Tectonic movements and climate changes are two main controllers on the development oflandform. In order to reconstruct the history of the evolution of the landform in the Fenhe drainagebasin during middle-late Quaternary comprehensively, this paper has provided a variety ofgeomorphological and geologic evidences to discuss how tectonic movements and climate changesworked together to influence the landform processes. According to the features of the lacustrine andalluvial terraces in this drainage basin, it is deduced that it was the three tectonic uplifts that resultedin the three great lake-regressions with an extent of about 40-60 m and the formation of the threelacustrine terraces. The times when the tectonic uplifts took place are 0.76 MaBP, 0.55 MaBP and0.13 MaBP respectively, synchronous with the formation of paleosol units S8, S5 and S1 respectively.During the intervals between two tectonic uplifts when tectonic movement was very weak, climatechanges played a major role in the evolution of the paleolakes and caused frequent fluctuations oflake levels. The changes of the features of lacustrine sediment in the grabens show the extent of suchfluctuations of lake level is about 2-3 m.