They also make study of the relationship between primeval laws and primitive moralities, the link between primeval laws and statute laws, and the social functions of primeval laws.

This article emphasizes the legislation isn t omnipotent via analysising the three aspects: morality is a necessary social norm;the scope the law can regulate is limited;statute law isn t totally perfect.

The root cause of statute law`s limitations is that law supports people`s multiple value pursuances.

And in order to construct the typical socialistic legal system in China, people should make written law as its main body and case law as its indispensable supplementary.

Since the Communique of Chinese Supreme Court began to publicize the representative cases termly,the discussion aboutthe benefit of prejudication as a supplement to written law is very heated.

Statutory law for protecting private property right comes into being in succession which aroses heated controversy and gives rise to the great change of Chinese legal system from habitual law to statutory law.

On the basis of reviewing the development of statutory law and customary law about land transaction from Song Dynasty to Qing Dynasty, this article analyzes the influences that the statutory law and customary law exerted on the land transaction in the countryside, and points out that the existence of the customary law could reduce the cost of making contracts and carrying out transactions.