This paper researched about typical 'Silhak Scholars yuzhoubentiguan' involved in basis of Realist School of 'Confucianism' and 'renjanguan'. Their common the pursuit of learning is 'neisheng waiwang' on self-reflection of 'Zhuzistudies fundamental Confucianism'. Besides, we looked for a philosophical ground of 'principle of response to reality'. They insisted that 'yuzhoubenti' is made by 'the One'('qi', 'taiji', 'shebqk henqi') as 'benyuanyiti' of 'wanyouwanhua'. In this point, they thought that human also simultaneously and homogeneously have mental and physical attributes, so human must realize harmonious relation of its. On this philosophical thought, differential valuation and an opposing definition on the past 'Zhuzistudies' can not help being criticized, denied. This became begining of 'Silhaktic' thought, and then they felt the moral problem the needs of 'Gyongsechiyong'. This 'Silhak' thought was formed and developed by 'Panxi', 'Shenghao' and 'Tanxuan'. After this, 'Chashan' aggregated, 'Huigang' reinforced the meaning on preparation of 'the age of enlightenment'.