Abstract: The innovation of geomechanics created by Professor J.S.Lee(Li Siguang) is expounded and discussed from scientific innovation system,technological innovation system,application and dissemination system.In the transition from the old contrary to the new authors put forward how to develop geomechanics from the geodynamical theory,the new dynamics theory of East Asian Continent,material accommodation under the action of tectonic force and its metallogenetic mechanism,evaluation of the stability of Earth crust and nonlinear engineering geomechanics,evaluation of oil and gas in China and petroleum geomechanics,environmental change of Meso-Cenozoic East Asian Continent and the mode of E-W-trending tectonic upwarping and downwarping and their dynamics,and the evaluation and planning of territory resource and their relation to the Earth system theory.