The“Paradigm”focuses on the consensus of scientific community to conduct a certain research,including the consistency of research objects,methods,standards and beliefs. However,the scientific community will destroy the original paradigm on a large scale due to the change of beliefs,shifting the focus and methods of previous research when facing a big crisis. The study of Confucian classics changed its emphasis from exegesis in the Han and Tang Dynasties to thoughts in the Song dynasty,until Neo-Confucianism became the mainstream of learning,the essence of which is the Confucianism's response to the dilemma of their own time by rethinking and readjusting the focus and methods of study on the Confucian classicsbecause of the changes in academic belief in the Song Dynasty. Thus,the essence of thereform of classics studiesin the Song Dynasty is the“paradigm shift”of academic discourse. "范式"重在强调科学社群进行某项研究的共识,包括研究对象、方法、标准和信仰的一致性。当面对危机时,科学社群因为学术信念的改变而大规模地破坏原先的范式,转移先前的研究重心和研究方法,由此导致"范式转移"。经学由在汉唐时期偏重训诂转变为宋代偏重义理,直至理学歧出于经学成为学术主流,其本质是宋儒面对时代困境,因治经信念改变,通过对治经重心、治经方法的反思调整而进行的学术回应。宋代"经学变古"的实质为经学学术话语的"范式转移"。