The efficacy of law is the core issue in jurisprudence, which is focus on the actual situation and effect among the operation of law in modern society of rule by law. Base on the situation of violate the law without bearing burden frequently, it makes clear that researches of law have important oriented pertinence. At the same time, pay more attention about the researches of law have important values in finding origins and enhancing theories, because people have not drown more attention and known...