Due to the increasing complexity and interdisciplinary of law,the previous interdisciplinary studies of law have been quietly upgraded,which is called'interdisciplinary integration'in this paper.The change brought about by the interdisciplinary integration to contemporary law can be discussed from three aspects:Firstly,the development of interdisciplinary law research in China;Secondly,what are the new methodological characteristics of interdisciplinary integration in law?Thirdly,what is the main advantage of interdisciplinary integration in law?The conclusion of this study is that the interdisciplinary research of'close relatives'in law has significantly upgraded to'heterogeneous'interdisciplinary integration.It brings an upgrade of interdisciplinary methods to contemporary law,as well as new methods and paths for interdisciplinary integration,making it a profound revolution in law.Its advantage lies in the exploring'reliable facts'.The development trend of interdisciplinary jurisprudence in China is becoming increasingly strong,and may update or replace social positive jurisprudence.