As one of descendants of the Ming loyalists,Liu Xianting strongly commended the valiant and dis-dained the apostate. He had a wide range of scholarly interest and broad academic vision,which covered agriculture, water conservancy,calendar,mathematics,geography,phonology,etc. Especially his phonology study summarized the pronunciation rules of Manchu,Mongolian,Sanskrit,Latin and other languages. He despised the old pedant, stressing that the scholarship should pay attention to reality. He had academic ambition and scholarly thinking ahead of time. Unfortunately he had no successor,and his writings rarely spread as well,which not only reflected humanis-tic pragmatism in political and socio-ecological environment of the early Qing Dynasty ,but also the impact of West-ern learning on Chinese traditional academics.