Abstract: More than 2,000 years ago,the pre-Qin Legalist School proposed the "rule by law" theory and put it to practice,which has had a profound influence on the rule of all the following dynasties.Although this idea is different from the modern "rule by law",it also contains the initiation spark of the "rule by law" of the modern age and should not be thrown into the domain of "rule by men".We are expected to hold a comprehensive and historical attitude to learn its essence and to serve for the construction of a so...