After the period Ching-Li of King Jen-Tsung, North Song Dynasty, there have started many different schools of studies in Song Dynasty. The father and son of the Su family also got famous during the Chia-Yu period of King Jen-Tsung, for their excellent articles and discussions, and have gradually established their school of ideology, that is the so-called " Su Shih Shu Hsueh". Also "Su Shih Shu Hsueh" was criticized during Song Dynasty and especially by Chu Hsi, who referred it as the "very mixed study". After that, the author of "Song Yuan Hsueh An" also rejected it and did not provide it with authentic academic position, calling it "Su Shih Shu Hsueh Lun", and put it at the end of the book without following the chronological order. Undoubtedly, "Su Shih Shu Hsueh" still situated among these major schools of study in North Song Dynasty as a new rising force. As an academic school under the popular trend of Ju School restoration during the middle of North Song Dynasty, "Su Shih Shu Hsueh" also reflected the academic trend of thought at that time, for example, concerning questioning and innovation of traditional Ju study, discussion about meaning, truth and nature, or brainstorming of Buddhism and Lao-tzu thinkings, The Su family tried to express his opinions and has stirred different responses. From the above topics, this article tries to discuss the academic trend of thought popular among scholars during the North Song Dynasty and also analyze the unique status that the study of the Su family obtained comparing with them.