Mt. Sanqingshan in Jiangxi, with the geological evolutionary history of more than 1 billion years, entered the World Natural Heritage List in July, 2008, and was awarded the name Global Geopark in September, 2012. It is famous for its granite geology and granite peak landform and can be regarded as the natural museum of granite micro-landforms, with global comparison significance. It is called Mt. Sanqingshan Style granite landform. In this paper, the development mechanism of the landform was analyzed in four aspects, i.e., tectonic setting, material basis, external forces and change of external forces. It is believed that the structure is the dominant factor for the formation of the Mt. Sanqingshan Style granite landform, that A-type granite with high silicon and potassium and low magnesium and calcium is the material basis, that water is an important external dynamic force, and that the cyclical climate change since Quaternary has been one of the important factors for micro-landscape diversity.