Abstract: Mr. J.S.Lee is one of the founders of geology in China and he created geomechanics based on mechanics, with it different from the traditional geology, and since then, geology has moved from qualitative research to semi-quantitative and quantitative research. Academic views are different from one person to another, emphasizing that all flowers blossom together; however, his methods to propose, analyze and solve problems based on mechanics are universal, which has opened up the vision of later generations and influenced the subsequent studies of plate tectonics and continental tectonics. More importantly, although he added a wealth of modern scientific elements to geology, he still emphasized the cultivation of basic geological skills, the improvement of field observation and practice ability, the interdisciplinary and the accumulation of first-hand data, all of which are particularly valuable today.