Existing literature has barely pointed out Qian Mu's (1895-1990) interpretations towards Song Xue (Song dynasty academic thought) based on the context of the impacts that Western Constitutionalism was brought up since early years of the Republic of China. This research emphasizes that Song Xue is an integrated academic system of self-cultivation (xiu shen) and country governance (zhi guo). Scholars in the Song dynasty developed the theories of Xing Ji Li (goodness in human nature) and Xin Ji Li (goodness in the heart) to enhance the concept of Tian Ren He Yi (integration of heaven and human) and to affirm a political utopia of Tian Xia You Dao (ideal politics). Since Tian Dao (the highest principle in the universe) and Tian Li (the rules of the operation of everything in the world) are naturally operated within individuals, which enlightening educational functions that religions provided were accordingly included in Chinese politics. The reinterpretations of the Song Xue's crisis consciousness by Qian Mu mainly focus on the educational functions offered by the religions other than the legal check and balance from the Western societies; the whole society could be dominated by the legal check and balance system and lack a push for growth if Western Constitutionalism is greatly introduced to replace Song Xue that is able to purify politics with education.