Analyzes several issues of the theory of proximate connection from the perspective of international civil tort rules of choice of law.

Trying cases of foreign tort,judge should consider social value of tort and substantive result of law application on the basis of theory of proximate connection in order to realize application of substantive law.

In the following development,proper law gradually formed the meaning which is a combination of will autonomy and the most significant relationship.

The "Characteristic Performance" theory is adopted by countries of Continental Legal Family as a popular standard to determine contracts applicable law,and it greatly benefits the reification of principle of the most significant relationship.

Application of the doctrine of the most significant relationship in the realm of the tortious liability;

Analyze the Doctrine of the Most Significant Relationship in the International Private Law;

As a new system in international private law, the doctrine of the most significant relationship results from the political economic cultural and philosophical base.

As a basic principle,the most significant relationship principle exaggerates the role of itself.

In order to make best use of the application of the most significant relationship principle,we must relocate the principle in the light of legal-sociology.

Originating from countries of Great Britain and American legal system,the principle of the most significant relationship has gained universal popularity,which give proper and different power between the law maker and the judicial,but it also has two major weaknesses: one is that it is too flexible,the other is that it isn t flexible enough.