One of the important reasons for the significant development of the rule of law and the legal research in China since the reform and opening up in 1978 is the rapid popularization and extensive application of comparative law. The application of such methods of comparative law as “seeking commonness among differences” and “seeking differences among commonness”, whether in the fields of legislation, law enforcement, administrative of justice or legal supervision, has provided China with broader vision, deeper understanding, more choices and more effective reference in the construction of the rule of law and legal research, and given it wings for the take-off of the modernization of the legal system in China.