The question of what the basic attribute of economic law is has always been one of the bones of contention in economic law research. This paper, through the semantic interpretation of state intervention, proves that state intervention is a continuous historical process, and on the basis of analysis of legal texts of the sate intervention clarifies that the basic attribute of economic law is state intervention on social and economic life. Then, from the positive angle, this paper explores situations in which the Chinese people benefited from state intervention and quoted the evaluations of foreign scholars about the performance of state intervention in China. Finally, this paper proposes some notions of improving the operational mechanism of the state intervention in China.