A large number of problems with which China's civil law is faced can all be due to the matter of the choice of road.It is necessary for us to keep the jurisprudence from degenerating into“a worm of law”because of the trend of legal positivism which develops following the codification of civil law，and enables it to continue maintaining a vigorous momentum of development，to play an original mission for the world's civil law，and to produce new common law along with the conduct of the Belt and Road initiative.This is the very course of jurisprudential positivism.However，in the history of law，jurisprudential positivism was nothing but a foil to the terminologies like legal positivism.Therefore，in modern times，civil law in the post-code era has to trudge in such a long zigzag path to develop itself and consciously or unintentionally returned to the views of the previous wise scholars.From the three dimensions of legal history，legal philosophy，and methodology，we should understand that the fundamental pursuit of jurisprudential positivism is to open the shackles brought by legal positivism and codes，to ensure that the current law can freely evolve，to ensure case justice，and at the same time to ensure that the stability of current law is promoted.This choice of road will respond to the call of the era that once again transcends national borders，makes strict demand，and builds a new common law，so that the development path of Chinese civil law is deeply embedded in the development background of world civil law.And the many problems we face now are also expected to be properly solved.