南北向九华大断裂的东、西两坡的地形地貌迥异，西坡地形陡峻，石柱、石墙、孤峰、深切沟谷等地貌发育，构造剥蚀景观突出；东坡坡度稍陡，坡形连续，侵蚀、剥蚀型地貌发育。这种断裂两侧、东西坡地形差异的动力一是坡度，二是构造，三是阳光降雨等自然要素，导致两坡地貌动力过程差异产生地貌差异。 Why are landforms on west and east slope of Jiuhuashan Mountains different? The landforms on east and west slope of south-north Jiuhua Large Fault are different. The west slope is precipitous,and owns spectacular landscapes like stone pillar, stone wall, isolated peak and deep cleugh as well as prominent tectonic denudation landscape. The east slope is little steep, continuous and has eroded landform. Causes of two slopes’ different topography are mainly the followings, firstly gradient, secondly structure and thirdly natural factors like sunlight and rainwater. All of these made differential erosion and produced different landscapes.